Commit | Line | Data |
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d418ef42 | 1 | /* Interface code for dealing with text properties. |
acaf905b | 2 | Copyright (C) 1993-1995, 1997, 1999-2012 Free Software Foundation, Inc. |
d418ef42 JA |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
d418ef42 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
d418ef42 JA |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d418ef42 | 18 | |
18160b98 | 19 | #include <config.h> |
0328b6de | 20 | |
d418ef42 JA |
21 | #include "lisp.h" |
22 | #include "intervals.h" | |
e5560ff7 | 23 | #include "character.h" |
d418ef42 | 24 | #include "buffer.h" |
f5957179 | 25 | #include "window.h" |
59a486ab | 26 | |
318d2fa8 RS |
27 | /* Test for membership, allowing for t (actually any non-cons) to mean the |
28 | universal set. */ | |
29 | ||
30 | #define TMEM(sym, set) (CONSP (set) ? ! NILP (Fmemq (sym, set)) : ! NILP (set)) | |
d418ef42 JA |
31 | \f |
32 | ||
33 | /* NOTES: previous- and next- property change will have to skip | |
34 | zero-length intervals if they are implemented. This could be done | |
35 | inside next_interval and previous_interval. | |
36 | ||
9c79dd1b JA |
37 | set_properties needs to deal with the interval property cache. |
38 | ||
d418ef42 | 39 | It is assumed that for any interval plist, a property appears |
d4b530ad | 40 | only once on the list. Although some code i.e., remove_properties, |
d418ef42 | 41 | handles the more general case, the uniqueness of properties is |
eb8c3be9 | 42 | necessary for the system to remain consistent. This requirement |
cdf3e5a2 | 43 | is enforced by the subrs installing properties onto the intervals. */ |
d418ef42 JA |
44 | |
45 | \f | |
cdf3e5a2 | 46 | /* Types of hooks. */ |
955cbe7b PE |
47 | static Lisp_Object Qmouse_left; |
48 | static Lisp_Object Qmouse_entered; | |
d418ef42 JA |
49 | Lisp_Object Qpoint_left; |
50 | Lisp_Object Qpoint_entered; | |
dc70cea7 RS |
51 | Lisp_Object Qcategory; |
52 | Lisp_Object Qlocal_map; | |
d418ef42 | 53 | |
cdf3e5a2 | 54 | /* Visual properties text (including strings) may have. */ |
955cbe7b PE |
55 | static Lisp_Object Qforeground, Qbackground, Qunderline; |
56 | Lisp_Object Qfont; | |
57 | static Lisp_Object Qstipple; | |
58 | Lisp_Object Qinvisible, Qintangible, Qmouse_face; | |
59 | static Lisp_Object Qread_only; | |
54b33868 | 60 | Lisp_Object Qminibuffer_prompt; |
19e1c426 RS |
61 | |
62 | /* Sticky properties */ | |
63 | Lisp_Object Qfront_sticky, Qrear_nonsticky; | |
d7b4e137 JB |
64 | |
65 | /* If o1 is a cons whose cdr is a cons, return non-zero and set o2 to | |
66 | the o1's cdr. Otherwise, return zero. This is handy for | |
67 | traversing plists. */ | |
70949dac | 68 | #define PLIST_ELT_P(o1, o2) (CONSP (o1) && ((o2)=XCDR (o1), CONSP (o2))) |
d7b4e137 | 69 | |
318d2fa8 RS |
70 | /* verify_interval_modification saves insertion hooks here |
71 | to be run later by report_interval_modification. */ | |
50436f33 PE |
72 | static Lisp_Object interval_insert_behind_hooks; |
73 | static Lisp_Object interval_insert_in_front_hooks; | |
7cb66899 GM |
74 | |
75 | ||
76 | /* Signal a `text-read-only' error. This function makes it easier | |
77 | to capture that error in GDB by putting a breakpoint on it. */ | |
78 | ||
845ca893 | 79 | static _Noreturn void |
971de7fb | 80 | text_read_only (Lisp_Object propval) |
7cb66899 | 81 | { |
d0a29e1d KS |
82 | if (STRINGP (propval)) |
83 | xsignal1 (Qtext_read_only, propval); | |
84 | ||
85 | xsignal0 (Qtext_read_only); | |
7cb66899 GM |
86 | } |
87 | ||
88 | ||
d418ef42 | 89 | \f |
ac876a79 JA |
90 | /* Extract the interval at the position pointed to by BEGIN from |
91 | OBJECT, a string or buffer. Additionally, check that the positions | |
92 | pointed to by BEGIN and END are within the bounds of OBJECT, and | |
93 | reverse them if *BEGIN is greater than *END. The objects pointed | |
94 | to by BEGIN and END may be integers or markers; if the latter, they | |
95 | are coerced to integers. | |
d418ef42 | 96 | |
d4b530ad RS |
97 | When OBJECT is a string, we increment *BEGIN and *END |
98 | to make them origin-one. | |
99 | ||
d418ef42 JA |
100 | Note that buffer points don't correspond to interval indices. |
101 | For example, point-max is 1 greater than the index of the last | |
102 | character. This difference is handled in the caller, which uses | |
103 | the validated points to determine a length, and operates on that. | |
104 | Exceptions are Ftext_properties_at, Fnext_property_change, and | |
105 | Fprevious_property_change which call this function with BEGIN == END. | |
106 | Handle this case specially. | |
107 | ||
77c7bcb1 | 108 | If FORCE is soft (0), it's OK to return NULL. Otherwise, |
ac876a79 JA |
109 | create an interval tree for OBJECT if one doesn't exist, provided |
110 | the object actually contains text. In the current design, if there | |
d4b530ad | 111 | is no text, there can be no text properties. */ |
d418ef42 JA |
112 | |
113 | #define soft 0 | |
114 | #define hard 1 | |
115 | ||
9dd7eec6 | 116 | INTERVAL |
971de7fb | 117 | validate_interval_range (Lisp_Object object, Lisp_Object *begin, Lisp_Object *end, int force) |
d418ef42 JA |
118 | { |
119 | register INTERVAL i; | |
d311d28c | 120 | ptrdiff_t searchpos; |
d4b530ad | 121 | |
b7826503 PJ |
122 | CHECK_STRING_OR_BUFFER (object); |
123 | CHECK_NUMBER_COERCE_MARKER (*begin); | |
124 | CHECK_NUMBER_COERCE_MARKER (*end); | |
d418ef42 JA |
125 | |
126 | /* If we are asked for a point, but from a subr which operates | |
cdf3e5a2 | 127 | on a range, then return nothing. */ |
64a49ca7 | 128 | if (EQ (*begin, *end) && begin != end) |
77c7bcb1 | 129 | return NULL; |
d418ef42 JA |
130 | |
131 | if (XINT (*begin) > XINT (*end)) | |
132 | { | |
d4b530ad RS |
133 | Lisp_Object n; |
134 | n = *begin; | |
d418ef42 | 135 | *begin = *end; |
d4b530ad | 136 | *end = n; |
d418ef42 JA |
137 | } |
138 | ||
5d2fa46f | 139 | if (BUFFERP (object)) |
d418ef42 JA |
140 | { |
141 | register struct buffer *b = XBUFFER (object); | |
142 | ||
d418ef42 JA |
143 | if (!(BUF_BEGV (b) <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
144 | && XINT (*end) <= BUF_ZV (b))) | |
145 | args_out_of_range (*begin, *end); | |
0c94c8d6 | 146 | i = buffer_intervals (b); |
d418ef42 | 147 | |
cdf3e5a2 | 148 | /* If there's no text, there are no properties. */ |
d4b530ad | 149 | if (BUF_BEGV (b) == BUF_ZV (b)) |
77c7bcb1 | 150 | return NULL; |
d4b530ad RS |
151 | |
152 | searchpos = XINT (*begin); | |
d418ef42 JA |
153 | } |
154 | else | |
155 | { | |
d311d28c | 156 | ptrdiff_t len = SCHARS (object); |
d418ef42 | 157 | |
d4b530ad | 158 | if (! (0 <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
943afcc7 | 159 | && XINT (*end) <= len)) |
d418ef42 | 160 | args_out_of_range (*begin, *end); |
ad077db0 | 161 | XSETFASTINT (*begin, XFASTINT (*begin)); |
b1e94638 | 162 | if (begin != end) |
ad077db0 | 163 | XSETFASTINT (*end, XFASTINT (*end)); |
0c94c8d6 | 164 | i = string_intervals (object); |
d4b530ad | 165 | |
943afcc7 | 166 | if (len == 0) |
77c7bcb1 | 167 | return NULL; |
d4b530ad RS |
168 | |
169 | searchpos = XINT (*begin); | |
d418ef42 JA |
170 | } |
171 | ||
77c7bcb1 | 172 | if (!i) |
d418ef42 | 173 | return (force ? create_root_interval (object) : i); |
81f6e55f | 174 | |
d4b530ad | 175 | return find_interval (i, searchpos); |
d418ef42 JA |
176 | } |
177 | ||
178 | /* Validate LIST as a property list. If LIST is not a list, then | |
179 | make one consisting of (LIST nil). Otherwise, verify that LIST | |
cdf3e5a2 | 180 | is even numbered and thus suitable as a plist. */ |
d418ef42 JA |
181 | |
182 | static Lisp_Object | |
971de7fb | 183 | validate_plist (Lisp_Object list) |
d418ef42 JA |
184 | { |
185 | if (NILP (list)) | |
186 | return Qnil; | |
187 | ||
188 | if (CONSP (list)) | |
189 | { | |
190 | register int i; | |
191 | register Lisp_Object tail; | |
99784d63 | 192 | for (i = 0, tail = list; CONSP (tail); i++) |
b1e94638 | 193 | { |
99784d63 | 194 | tail = XCDR (tail); |
b1e94638 JB |
195 | QUIT; |
196 | } | |
d418ef42 JA |
197 | if (i & 1) |
198 | error ("Odd length text property list"); | |
199 | return list; | |
200 | } | |
201 | ||
202 | return Fcons (list, Fcons (Qnil, Qnil)); | |
203 | } | |
204 | ||
d418ef42 | 205 | /* Return nonzero if interval I has all the properties, |
cdf3e5a2 | 206 | with the same values, of list PLIST. */ |
d418ef42 JA |
207 | |
208 | static int | |
971de7fb | 209 | interval_has_all_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 | 210 | { |
695f302f | 211 | register Lisp_Object tail1, tail2, sym1; |
d418ef42 JA |
212 | register int found; |
213 | ||
cdf3e5a2 | 214 | /* Go through each element of PLIST. */ |
99784d63 | 215 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 216 | { |
99784d63 | 217 | sym1 = XCAR (tail1); |
d418ef42 JA |
218 | found = 0; |
219 | ||
220 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
221 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
222 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 JA |
223 | { |
224 | /* Found the same property on both lists. If the | |
cdf3e5a2 | 225 | values are unequal, return zero. */ |
99784d63 | 226 | if (! EQ (Fcar (XCDR (tail1)), Fcar (XCDR (tail2)))) |
d418ef42 JA |
227 | return 0; |
228 | ||
224a3131 | 229 | /* Property has same value on both lists; go to next one. */ |
d418ef42 JA |
230 | found = 1; |
231 | break; | |
232 | } | |
233 | ||
234 | if (! found) | |
235 | return 0; | |
236 | } | |
237 | ||
238 | return 1; | |
239 | } | |
240 | ||
241 | /* Return nonzero if the plist of interval I has any of the | |
cdf3e5a2 | 242 | properties of PLIST, regardless of their values. */ |
d418ef42 | 243 | |
b0ab8123 | 244 | static int |
971de7fb | 245 | interval_has_some_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 JA |
246 | { |
247 | register Lisp_Object tail1, tail2, sym; | |
248 | ||
cdf3e5a2 | 249 | /* Go through each element of PLIST. */ |
99784d63 | 250 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 251 | { |
99784d63 | 252 | sym = XCAR (tail1); |
d418ef42 JA |
253 | |
254 | /* Go through i's plist, looking for tail1 */ | |
99784d63 SM |
255 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
256 | if (EQ (sym, XCAR (tail2))) | |
d418ef42 JA |
257 | return 1; |
258 | } | |
259 | ||
260 | return 0; | |
261 | } | |
11713b6d RS |
262 | |
263 | /* Return nonzero if the plist of interval I has any of the | |
264 | property names in LIST, regardless of their values. */ | |
265 | ||
b0ab8123 | 266 | static int |
971de7fb | 267 | interval_has_some_properties_list (Lisp_Object list, INTERVAL i) |
11713b6d RS |
268 | { |
269 | register Lisp_Object tail1, tail2, sym; | |
270 | ||
271 | /* Go through each element of LIST. */ | |
99784d63 | 272 | for (tail1 = list; CONSP (tail1); tail1 = XCDR (tail1)) |
11713b6d | 273 | { |
7d7bbefd | 274 | sym = XCAR (tail1); |
11713b6d RS |
275 | |
276 | /* Go through i's plist, looking for tail1 */ | |
99784d63 | 277 | for (tail2 = i->plist; CONSP (tail2); tail2 = XCDR (XCDR (tail2))) |
11713b6d RS |
278 | if (EQ (sym, XCAR (tail2))) |
279 | return 1; | |
280 | } | |
281 | ||
282 | return 0; | |
283 | } | |
d4b530ad | 284 | \f |
d7b4e137 JB |
285 | /* Changing the plists of individual intervals. */ |
286 | ||
287 | /* Return the value of PROP in property-list PLIST, or Qunbound if it | |
288 | has none. */ | |
64a49ca7 | 289 | static Lisp_Object |
971de7fb | 290 | property_value (Lisp_Object plist, Lisp_Object prop) |
d7b4e137 JB |
291 | { |
292 | Lisp_Object value; | |
293 | ||
294 | while (PLIST_ELT_P (plist, value)) | |
70949dac KR |
295 | if (EQ (XCAR (plist), prop)) |
296 | return XCAR (value); | |
d7b4e137 | 297 | else |
70949dac | 298 | plist = XCDR (value); |
d7b4e137 JB |
299 | |
300 | return Qunbound; | |
301 | } | |
302 | ||
d4b530ad RS |
303 | /* Set the properties of INTERVAL to PROPERTIES, |
304 | and record undo info for the previous values. | |
305 | OBJECT is the string or buffer that INTERVAL belongs to. */ | |
306 | ||
307 | static void | |
971de7fb | 308 | set_properties (Lisp_Object properties, INTERVAL interval, Lisp_Object object) |
d4b530ad | 309 | { |
d7b4e137 | 310 | Lisp_Object sym, value; |
d4b530ad | 311 | |
d7b4e137 | 312 | if (BUFFERP (object)) |
d4b530ad | 313 | { |
d7b4e137 JB |
314 | /* For each property in the old plist which is missing from PROPERTIES, |
315 | or has a different value in PROPERTIES, make an undo record. */ | |
316 | for (sym = interval->plist; | |
317 | PLIST_ELT_P (sym, value); | |
70949dac KR |
318 | sym = XCDR (value)) |
319 | if (! EQ (property_value (properties, XCAR (sym)), | |
320 | XCAR (value))) | |
f7a9275a | 321 | { |
f7a9275a | 322 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 323 | XCAR (sym), XCAR (value), |
f7a9275a RS |
324 | object); |
325 | } | |
d7b4e137 JB |
326 | |
327 | /* For each new property that has no value at all in the old plist, | |
328 | make an undo record binding it to nil, so it will be removed. */ | |
329 | for (sym = properties; | |
330 | PLIST_ELT_P (sym, value); | |
70949dac KR |
331 | sym = XCDR (value)) |
332 | if (EQ (property_value (interval->plist, XCAR (sym)), Qunbound)) | |
f7a9275a | 333 | { |
f7a9275a | 334 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 335 | XCAR (sym), Qnil, |
f7a9275a RS |
336 | object); |
337 | } | |
d4b530ad RS |
338 | } |
339 | ||
340 | /* Store new properties. */ | |
0c94c8d6 | 341 | set_interval_plist (interval, Fcopy_sequence (properties)); |
d4b530ad | 342 | } |
d418ef42 JA |
343 | |
344 | /* Add the properties of PLIST to the interval I, or set | |
345 | the value of I's property to the value of the property on PLIST | |
346 | if they are different. | |
347 | ||
d4b530ad RS |
348 | OBJECT should be the string or buffer the interval is in. |
349 | ||
d418ef42 JA |
350 | Return nonzero if this changes I (i.e., if any members of PLIST |
351 | are actually added to I's plist) */ | |
352 | ||
d4b530ad | 353 | static int |
971de7fb | 354 | add_properties (Lisp_Object plist, INTERVAL i, Lisp_Object object) |
d418ef42 | 355 | { |
c98da214 | 356 | Lisp_Object tail1, tail2, sym1, val1; |
d418ef42 JA |
357 | register int changed = 0; |
358 | register int found; | |
c98da214 RS |
359 | struct gcpro gcpro1, gcpro2, gcpro3; |
360 | ||
361 | tail1 = plist; | |
362 | sym1 = Qnil; | |
363 | val1 = Qnil; | |
364 | /* No need to protect OBJECT, because we can GC only in the case | |
365 | where it is a buffer, and live buffers are always protected. | |
366 | I and its plist are also protected, via OBJECT. */ | |
367 | GCPRO3 (tail1, sym1, val1); | |
d418ef42 | 368 | |
cdf3e5a2 | 369 | /* Go through each element of PLIST. */ |
99784d63 | 370 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 371 | { |
99784d63 SM |
372 | sym1 = XCAR (tail1); |
373 | val1 = Fcar (XCDR (tail1)); | |
d418ef42 JA |
374 | found = 0; |
375 | ||
376 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
377 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
378 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 | 379 | { |
c98da214 RS |
380 | /* No need to gcpro, because tail2 protects this |
381 | and it must be a cons cell (we get an error otherwise). */ | |
3814ccf5 | 382 | register Lisp_Object this_cdr; |
d418ef42 | 383 | |
99784d63 | 384 | this_cdr = XCDR (tail2); |
cdf3e5a2 | 385 | /* Found the property. Now check its value. */ |
d418ef42 JA |
386 | found = 1; |
387 | ||
388 | /* The properties have the same value on both lists. | |
cdf3e5a2 | 389 | Continue to the next property. */ |
734c51b2 | 390 | if (EQ (val1, Fcar (this_cdr))) |
d418ef42 JA |
391 | break; |
392 | ||
d4b530ad | 393 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 394 | if (BUFFERP (object)) |
d4b530ad | 395 | { |
f7a9275a RS |
396 | record_property_change (i->position, LENGTH (i), |
397 | sym1, Fcar (this_cdr), object); | |
d4b530ad RS |
398 | } |
399 | ||
d418ef42 JA |
400 | /* I's property has a different value -- change it */ |
401 | Fsetcar (this_cdr, val1); | |
402 | changed++; | |
403 | break; | |
404 | } | |
405 | ||
406 | if (! found) | |
407 | { | |
d4b530ad | 408 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 409 | if (BUFFERP (object)) |
d4b530ad | 410 | { |
f7a9275a RS |
411 | record_property_change (i->position, LENGTH (i), |
412 | sym1, Qnil, object); | |
d4b530ad | 413 | } |
0c94c8d6 | 414 | set_interval_plist (i, Fcons (sym1, Fcons (val1, i->plist))); |
d418ef42 JA |
415 | changed++; |
416 | } | |
417 | } | |
418 | ||
c98da214 RS |
419 | UNGCPRO; |
420 | ||
d418ef42 JA |
421 | return changed; |
422 | } | |
423 | ||
11713b6d RS |
424 | /* For any members of PLIST, or LIST, |
425 | which are properties of I, remove them from I's plist. | |
426 | (If PLIST is non-nil, use that, otherwise use LIST.) | |
d4b530ad | 427 | OBJECT is the string or buffer containing I. */ |
d418ef42 | 428 | |
d4b530ad | 429 | static int |
971de7fb | 430 | remove_properties (Lisp_Object plist, Lisp_Object list, INTERVAL i, Lisp_Object object) |
d418ef42 | 431 | { |
3814ccf5 | 432 | register Lisp_Object tail1, tail2, sym, current_plist; |
d418ef42 JA |
433 | register int changed = 0; |
434 | ||
f25d60d6 KS |
435 | /* Nonzero means tail1 is a plist, otherwise it is a list. */ |
436 | int use_plist; | |
11713b6d | 437 | |
3814ccf5 | 438 | current_plist = i->plist; |
11713b6d RS |
439 | |
440 | if (! NILP (plist)) | |
f25d60d6 | 441 | tail1 = plist, use_plist = 1; |
11713b6d | 442 | else |
f25d60d6 | 443 | tail1 = list, use_plist = 0; |
11713b6d RS |
444 | |
445 | /* Go through each element of LIST or PLIST. */ | |
b079118d | 446 | while (CONSP (tail1)) |
d418ef42 | 447 | { |
11713b6d | 448 | sym = XCAR (tail1); |
d418ef42 | 449 | |
11713b6d | 450 | /* First, remove the symbol if it's at the head of the list */ |
b079118d | 451 | while (CONSP (current_plist) && EQ (sym, XCAR (current_plist))) |
d418ef42 | 452 | { |
5d2fa46f | 453 | if (BUFFERP (object)) |
11713b6d RS |
454 | record_property_change (i->position, LENGTH (i), |
455 | sym, XCAR (XCDR (current_plist)), | |
456 | object); | |
d4b530ad | 457 | |
11713b6d | 458 | current_plist = XCDR (XCDR (current_plist)); |
d418ef42 JA |
459 | changed++; |
460 | } | |
461 | ||
11713b6d | 462 | /* Go through I's plist, looking for SYM. */ |
d418ef42 JA |
463 | tail2 = current_plist; |
464 | while (! NILP (tail2)) | |
465 | { | |
3814ccf5 | 466 | register Lisp_Object this; |
11713b6d | 467 | this = XCDR (XCDR (tail2)); |
b079118d | 468 | if (CONSP (this) && EQ (sym, XCAR (this))) |
d418ef42 | 469 | { |
5d2fa46f | 470 | if (BUFFERP (object)) |
11713b6d RS |
471 | record_property_change (i->position, LENGTH (i), |
472 | sym, XCAR (XCDR (this)), object); | |
d4b530ad | 473 | |
11713b6d | 474 | Fsetcdr (XCDR (tail2), XCDR (XCDR (this))); |
d418ef42 JA |
475 | changed++; |
476 | } | |
477 | tail2 = this; | |
478 | } | |
11713b6d RS |
479 | |
480 | /* Advance thru TAIL1 one way or the other. */ | |
f25d60d6 KS |
481 | tail1 = XCDR (tail1); |
482 | if (use_plist && CONSP (tail1)) | |
11713b6d | 483 | tail1 = XCDR (tail1); |
d418ef42 JA |
484 | } |
485 | ||
486 | if (changed) | |
0c94c8d6 | 487 | set_interval_plist (i, current_plist); |
d418ef42 JA |
488 | return changed; |
489 | } | |
d418ef42 | 490 | \f |
81f6e55f | 491 | /* Returns the interval of POSITION in OBJECT. |
cdf3e5a2 RS |
492 | POSITION is BEG-based. */ |
493 | ||
494 | INTERVAL | |
d311d28c | 495 | interval_of (ptrdiff_t position, Lisp_Object object) |
cdf3e5a2 RS |
496 | { |
497 | register INTERVAL i; | |
d311d28c | 498 | ptrdiff_t beg, end; |
cdf3e5a2 RS |
499 | |
500 | if (NILP (object)) | |
501 | XSETBUFFER (object, current_buffer); | |
d0cb872a | 502 | else if (EQ (object, Qt)) |
77c7bcb1 | 503 | return NULL; |
cdf3e5a2 | 504 | |
b7826503 | 505 | CHECK_STRING_OR_BUFFER (object); |
cdf3e5a2 RS |
506 | |
507 | if (BUFFERP (object)) | |
508 | { | |
509 | register struct buffer *b = XBUFFER (object); | |
510 | ||
511 | beg = BUF_BEGV (b); | |
512 | end = BUF_ZV (b); | |
0c94c8d6 | 513 | i = buffer_intervals (b); |
cdf3e5a2 RS |
514 | } |
515 | else | |
516 | { | |
ad077db0 | 517 | beg = 0; |
943afcc7 | 518 | end = SCHARS (object); |
0c94c8d6 | 519 | i = string_intervals (object); |
cdf3e5a2 RS |
520 | } |
521 | ||
522 | if (!(beg <= position && position <= end)) | |
c7ef8e24 | 523 | args_out_of_range (make_number (position), make_number (position)); |
77c7bcb1 DA |
524 | if (beg == end || !i) |
525 | return NULL; | |
81f6e55f | 526 | |
cdf3e5a2 RS |
527 | return find_interval (i, position); |
528 | } | |
529 | \f | |
a7ca3326 | 530 | DEFUN ("text-properties-at", Ftext_properties_at, |
d418ef42 | 531 | Stext_properties_at, 1, 2, 0, |
8c1a1077 | 532 | doc: /* Return the list of properties of the character at POSITION in OBJECT. |
81f6e55f FP |
533 | If the optional second argument OBJECT is a buffer (or nil, which means |
534 | the current buffer), POSITION is a buffer position (integer or marker). | |
535 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 | 536 | If POSITION is at the end of OBJECT, the value is nil. */) |
5842a27b | 537 | (Lisp_Object position, Lisp_Object object) |
d418ef42 JA |
538 | { |
539 | register INTERVAL i; | |
d418ef42 JA |
540 | |
541 | if (NILP (object)) | |
c8a4fc3d | 542 | XSETBUFFER (object, current_buffer); |
d418ef42 | 543 | |
1f5e848a | 544 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 545 | if (!i) |
d418ef42 | 546 | return Qnil; |
1f5e848a | 547 | /* If POSITION is at the end of the interval, |
d4b530ad RS |
548 | it means it's the end of OBJECT. |
549 | There are no properties at the very end, | |
550 | since no character follows. */ | |
1f5e848a | 551 | if (XINT (position) == LENGTH (i) + i->position) |
d4b530ad | 552 | return Qnil; |
d418ef42 JA |
553 | |
554 | return i->plist; | |
555 | } | |
556 | ||
a7ca3326 | 557 | DEFUN ("get-text-property", Fget_text_property, Sget_text_property, 2, 3, 0, |
8c1a1077 | 558 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
b4f5313e CY |
559 | OBJECT should be a buffer or a string; if omitted or nil, it defaults |
560 | to the current buffer. | |
8c1a1077 | 561 | If POSITION is at the end of OBJECT, the value is nil. */) |
5842a27b | 562 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
5fbe2a44 | 563 | { |
1f5e848a | 564 | return textget (Ftext_properties_at (position, object), prop); |
5fbe2a44 RS |
565 | } |
566 | ||
bcf97349 | 567 | /* Return the value of char's property PROP, in OBJECT at POSITION. |
8d41abc4 MB |
568 | OBJECT is optional and defaults to the current buffer. |
569 | If OVERLAY is non-0, then in the case that the returned property is from | |
570 | an overlay, the overlay found is returned in *OVERLAY, otherwise nil is | |
571 | returned in *OVERLAY. | |
572 | If POSITION is at the end of OBJECT, the value is nil. | |
573 | If OBJECT is a buffer, then overlay properties are considered as well as | |
574 | text properties. | |
575 | If OBJECT is a window, then that window's buffer is used, but | |
576 | window-specific overlays are considered only if they are associated | |
577 | with OBJECT. */ | |
578 | Lisp_Object | |
971de7fb | 579 | get_char_property_and_overlay (Lisp_Object position, register Lisp_Object prop, Lisp_Object object, Lisp_Object *overlay) |
f5957179 KH |
580 | { |
581 | struct window *w = 0; | |
582 | ||
b7826503 | 583 | CHECK_NUMBER_COERCE_MARKER (position); |
f5957179 KH |
584 | |
585 | if (NILP (object)) | |
c8a4fc3d | 586 | XSETBUFFER (object, current_buffer); |
f5957179 KH |
587 | |
588 | if (WINDOWP (object)) | |
589 | { | |
590 | w = XWINDOW (object); | |
d3d50620 | 591 | object = w->buffer; |
f5957179 KH |
592 | } |
593 | if (BUFFERP (object)) | |
594 | { | |
b081724f | 595 | ptrdiff_t noverlays; |
b5be4dbe | 596 | Lisp_Object *overlay_vec; |
cbc55f55 RS |
597 | struct buffer *obuf = current_buffer; |
598 | ||
dd6f2802 RS |
599 | if (XINT (position) < BUF_BEGV (XBUFFER (object)) |
600 | || XINT (position) > BUF_ZV (XBUFFER (object))) | |
601 | xsignal1 (Qargs_out_of_range, position); | |
602 | ||
cbc55f55 | 603 | set_buffer_temp (XBUFFER (object)); |
f5957179 | 604 | |
b5be4dbe | 605 | GET_OVERLAYS_AT (XINT (position), overlay_vec, noverlays, NULL, 0); |
f5957179 KH |
606 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
607 | ||
cbc55f55 RS |
608 | set_buffer_temp (obuf); |
609 | ||
f5957179 KH |
610 | /* Now check the overlays in order of decreasing priority. */ |
611 | while (--noverlays >= 0) | |
612 | { | |
b5be4dbe | 613 | Lisp_Object tem = Foverlay_get (overlay_vec[noverlays], prop); |
f5957179 | 614 | if (!NILP (tem)) |
8d41abc4 MB |
615 | { |
616 | if (overlay) | |
617 | /* Return the overlay we got the property from. */ | |
618 | *overlay = overlay_vec[noverlays]; | |
619 | return tem; | |
620 | } | |
f5957179 KH |
621 | } |
622 | } | |
8d41abc4 MB |
623 | |
624 | if (overlay) | |
625 | /* Indicate that the return value is not from an overlay. */ | |
626 | *overlay = Qnil; | |
627 | ||
f5957179 KH |
628 | /* Not a buffer, or no appropriate overlay, so fall through to the |
629 | simpler case. */ | |
8d41abc4 MB |
630 | return Fget_text_property (position, prop, object); |
631 | } | |
632 | ||
a7ca3326 | 633 | DEFUN ("get-char-property", Fget_char_property, Sget_char_property, 2, 3, 0, |
8c1a1077 | 634 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
8faef085 | 635 | Both overlay properties and text properties are checked. |
8c1a1077 PJ |
636 | OBJECT is optional and defaults to the current buffer. |
637 | If POSITION is at the end of OBJECT, the value is nil. | |
638 | If OBJECT is a buffer, then overlay properties are considered as well as | |
639 | text properties. | |
640 | If OBJECT is a window, then that window's buffer is used, but window-specific | |
641 | overlays are considered only if they are associated with OBJECT. */) | |
5842a27b | 642 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
8d41abc4 MB |
643 | { |
644 | return get_char_property_and_overlay (position, prop, object, 0); | |
f5957179 | 645 | } |
97a1bc63 LT |
646 | |
647 | DEFUN ("get-char-property-and-overlay", Fget_char_property_and_overlay, | |
648 | Sget_char_property_and_overlay, 2, 3, 0, | |
649 | doc: /* Like `get-char-property', but with extra overlay information. | |
95555145 RS |
650 | The value is a cons cell. Its car is the return value of `get-char-property' |
651 | with the same arguments--that is, the value of POSITION's property | |
652 | PROP in OBJECT. Its cdr is the overlay in which the property was | |
97a1bc63 | 653 | found, or nil, if it was found as a text property or not found at all. |
95555145 | 654 | |
97a1bc63 LT |
655 | OBJECT is optional and defaults to the current buffer. OBJECT may be |
656 | a string, a buffer or a window. For strings, the cdr of the return | |
657 | value is always nil, since strings do not have overlays. If OBJECT is | |
658 | a window, then that window's buffer is used, but window-specific | |
659 | overlays are considered only if they are associated with OBJECT. If | |
660 | POSITION is at the end of OBJECT, both car and cdr are nil. */) | |
5842a27b | 661 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
97a1bc63 LT |
662 | { |
663 | Lisp_Object overlay; | |
664 | Lisp_Object val | |
665 | = get_char_property_and_overlay (position, prop, object, &overlay); | |
6519d955 | 666 | return Fcons (val, overlay); |
97a1bc63 LT |
667 | } |
668 | ||
fcab51aa | 669 | \f |
a7ca3326 | 670 | DEFUN ("next-char-property-change", Fnext_char_property_change, |
fcab51aa | 671 | Snext_char_property_change, 1, 2, 0, |
8c1a1077 | 672 | doc: /* Return the position of next text property or overlay change. |
81f6e55f FP |
673 | This scans characters forward in the current buffer from POSITION till |
674 | it finds a change in some text property, or the beginning or end of an | |
675 | overlay, and returns the position of that. | |
85cc6738 | 676 | If none is found up to (point-max), the function returns (point-max). |
8c1a1077 | 677 | |
a41292c2 | 678 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
679 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
680 | LIMIT is a no-op if it is greater than (point-max). */) | |
5842a27b | 681 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
682 | { |
683 | Lisp_Object temp; | |
684 | ||
685 | temp = Fnext_overlay_change (position); | |
686 | if (! NILP (limit)) | |
687 | { | |
d615870a | 688 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
689 | if (XINT (limit) < XINT (temp)) |
690 | temp = limit; | |
691 | } | |
692 | return Fnext_property_change (position, Qnil, temp); | |
693 | } | |
694 | ||
a7ca3326 | 695 | DEFUN ("previous-char-property-change", Fprevious_char_property_change, |
fcab51aa | 696 | Sprevious_char_property_change, 1, 2, 0, |
8c1a1077 | 697 | doc: /* Return the position of previous text property or overlay change. |
81f6e55f FP |
698 | Scans characters backward in the current buffer from POSITION till it |
699 | finds a change in some text property, or the beginning or end of an | |
700 | overlay, and returns the position of that. | |
85cc6738 | 701 | If none is found since (point-min), the function returns (point-min). |
8c1a1077 | 702 | |
a41292c2 | 703 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
704 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
705 | LIMIT is a no-op if it is less than (point-min). */) | |
5842a27b | 706 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
707 | { |
708 | Lisp_Object temp; | |
f5957179 | 709 | |
fcab51aa RS |
710 | temp = Fprevious_overlay_change (position); |
711 | if (! NILP (limit)) | |
712 | { | |
d615870a | 713 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
714 | if (XINT (limit) > XINT (temp)) |
715 | temp = limit; | |
716 | } | |
717 | return Fprevious_property_change (position, Qnil, temp); | |
718 | } | |
0b0737d1 GM |
719 | |
720 | ||
a7ca3326 | 721 | DEFUN ("next-single-char-property-change", Fnext_single_char_property_change, |
b7e047fb | 722 | Snext_single_char_property_change, 2, 4, 0, |
8c1a1077 PJ |
723 | doc: /* Return the position of next text property or overlay change for a specific property. |
724 | Scans characters forward from POSITION till it finds | |
725 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
726 | If the optional third argument OBJECT is a buffer (or nil, which means |
727 | the current buffer), POSITION is a buffer position (integer or marker). | |
728 | If OBJECT is a string, POSITION is a 0-based index into it. | |
729 | ||
85cc6738 RS |
730 | In a string, scan runs to the end of the string. |
731 | In a buffer, it runs to (point-max), and the value cannot exceed that. | |
732 | ||
8c1a1077 PJ |
733 | The property values are compared with `eq'. |
734 | If the property is constant all the way to the end of OBJECT, return the | |
735 | last valid position in OBJECT. | |
736 | If the optional fourth argument LIMIT is non-nil, don't search | |
737 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 738 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
0b0737d1 GM |
739 | { |
740 | if (STRINGP (object)) | |
741 | { | |
b7e047fb MB |
742 | position = Fnext_single_property_change (position, prop, object, limit); |
743 | if (NILP (position)) | |
0b0737d1 GM |
744 | { |
745 | if (NILP (limit)) | |
d5db4077 | 746 | position = make_number (SCHARS (object)); |
0b0737d1 | 747 | else |
d615870a DK |
748 | { |
749 | CHECK_NUMBER (limit); | |
750 | position = limit; | |
751 | } | |
0b0737d1 GM |
752 | } |
753 | } | |
754 | else | |
755 | { | |
756 | Lisp_Object initial_value, value; | |
d311d28c | 757 | ptrdiff_t count = SPECPDL_INDEX (); |
0b0737d1 | 758 | |
b7e047fb | 759 | if (! NILP (object)) |
b7826503 | 760 | CHECK_BUFFER (object); |
81f6e55f | 761 | |
0b0737d1 GM |
762 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
763 | { | |
66322887 | 764 | record_unwind_current_buffer (); |
0b0737d1 GM |
765 | Fset_buffer (object); |
766 | } | |
767 | ||
d615870a DK |
768 | CHECK_NUMBER_COERCE_MARKER (position); |
769 | ||
b7e047fb | 770 | initial_value = Fget_char_property (position, prop, object); |
81f6e55f | 771 | |
b7e047fb | 772 | if (NILP (limit)) |
85cc6738 | 773 | XSETFASTINT (limit, ZV); |
b7e047fb | 774 | else |
b7826503 | 775 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 776 | |
85cc6738 | 777 | if (XFASTINT (position) >= XFASTINT (limit)) |
0b0737d1 | 778 | { |
85cc6738 RS |
779 | position = limit; |
780 | if (XFASTINT (position) > ZV) | |
781 | XSETFASTINT (position, ZV); | |
0b0737d1 | 782 | } |
85cc6738 RS |
783 | else |
784 | while (1) | |
785 | { | |
786 | position = Fnext_char_property_change (position, limit); | |
787 | if (XFASTINT (position) >= XFASTINT (limit)) | |
788 | { | |
789 | position = limit; | |
790 | break; | |
791 | } | |
792 | ||
793 | value = Fget_char_property (position, prop, object); | |
794 | if (!EQ (value, initial_value)) | |
795 | break; | |
796 | } | |
0b0737d1 GM |
797 | |
798 | unbind_to (count, Qnil); | |
799 | } | |
800 | ||
b7e047fb | 801 | return position; |
0b0737d1 GM |
802 | } |
803 | ||
a7ca3326 | 804 | DEFUN ("previous-single-char-property-change", |
b7e047fb MB |
805 | Fprevious_single_char_property_change, |
806 | Sprevious_single_char_property_change, 2, 4, 0, | |
8c1a1077 PJ |
807 | doc: /* Return the position of previous text property or overlay change for a specific property. |
808 | Scans characters backward from POSITION till it finds | |
809 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
810 | If the optional third argument OBJECT is a buffer (or nil, which means |
811 | the current buffer), POSITION is a buffer position (integer or marker). | |
812 | If OBJECT is a string, POSITION is a 0-based index into it. | |
813 | ||
85cc6738 RS |
814 | In a string, scan runs to the start of the string. |
815 | In a buffer, it runs to (point-min), and the value cannot be less than that. | |
816 | ||
8c1a1077 PJ |
817 | The property values are compared with `eq'. |
818 | If the property is constant all the way to the start of OBJECT, return the | |
819 | first valid position in OBJECT. | |
e531bdff DA |
820 | If the optional fourth argument LIMIT is non-nil, don't search back past |
821 | position LIMIT; return LIMIT if nothing is found before reaching LIMIT. */) | |
5842a27b | 822 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
b7e047fb MB |
823 | { |
824 | if (STRINGP (object)) | |
825 | { | |
826 | position = Fprevious_single_property_change (position, prop, object, limit); | |
827 | if (NILP (position)) | |
828 | { | |
829 | if (NILP (limit)) | |
1e02f3cb | 830 | position = make_number (0); |
b7e047fb | 831 | else |
d615870a DK |
832 | { |
833 | CHECK_NUMBER (limit); | |
834 | position = limit; | |
835 | } | |
b7e047fb MB |
836 | } |
837 | } | |
838 | else | |
839 | { | |
d311d28c | 840 | ptrdiff_t count = SPECPDL_INDEX (); |
b7e047fb MB |
841 | |
842 | if (! NILP (object)) | |
b7826503 | 843 | CHECK_BUFFER (object); |
81f6e55f | 844 | |
b7e047fb MB |
845 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
846 | { | |
66322887 | 847 | record_unwind_current_buffer (); |
b7e047fb MB |
848 | Fset_buffer (object); |
849 | } | |
81f6e55f | 850 | |
d615870a DK |
851 | CHECK_NUMBER_COERCE_MARKER (position); |
852 | ||
b7e047fb | 853 | if (NILP (limit)) |
85cc6738 | 854 | XSETFASTINT (limit, BEGV); |
b7e047fb | 855 | else |
b7826503 | 856 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 857 | |
ce6b02e0 | 858 | if (XFASTINT (position) <= XFASTINT (limit)) |
85cc6738 RS |
859 | { |
860 | position = limit; | |
861 | if (XFASTINT (position) < BEGV) | |
862 | XSETFASTINT (position, BEGV); | |
863 | } | |
ce6b02e0 | 864 | else |
b7e047fb | 865 | { |
85cc6738 RS |
866 | Lisp_Object initial_value |
867 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
868 | prop, object); | |
81f6e55f | 869 | |
85cc6738 | 870 | while (1) |
ce6b02e0 MB |
871 | { |
872 | position = Fprevious_char_property_change (position, limit); | |
0b0737d1 | 873 | |
ce6b02e0 MB |
874 | if (XFASTINT (position) <= XFASTINT (limit)) |
875 | { | |
876 | position = limit; | |
877 | break; | |
878 | } | |
879 | else | |
880 | { | |
85cc6738 RS |
881 | Lisp_Object value |
882 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
883 | prop, object); | |
ce6b02e0 MB |
884 | |
885 | if (!EQ (value, initial_value)) | |
886 | break; | |
887 | } | |
888 | } | |
b7e047fb MB |
889 | } |
890 | ||
891 | unbind_to (count, Qnil); | |
892 | } | |
893 | ||
894 | return position; | |
895 | } | |
fcab51aa | 896 | \f |
a7ca3326 | 897 | DEFUN ("next-property-change", Fnext_property_change, |
111b637d | 898 | Snext_property_change, 1, 3, 0, |
8c1a1077 PJ |
899 | doc: /* Return the position of next property change. |
900 | Scans characters forward from POSITION in OBJECT till it finds | |
901 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
902 | If the optional second argument OBJECT is a buffer (or nil, which means |
903 | the current buffer), POSITION is a buffer position (integer or marker). | |
904 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
905 | Return nil if the property is constant all the way to the end of OBJECT. |
906 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
907 | ||
908 | If the optional third argument LIMIT is non-nil, don't search | |
909 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 910 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
911 | { |
912 | register INTERVAL i, next; | |
913 | ||
5fbe2a44 | 914 | if (NILP (object)) |
c8a4fc3d | 915 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 916 | |
3a232704 | 917 | if (!NILP (limit) && !EQ (limit, Qt)) |
b7826503 | 918 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 919 | |
1f5e848a | 920 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 921 | |
041aa96f RS |
922 | /* If LIMIT is t, return start of next interval--don't |
923 | bother checking further intervals. */ | |
924 | if (EQ (limit, Qt)) | |
925 | { | |
77c7bcb1 | 926 | if (!i) |
44214c1b RS |
927 | next = i; |
928 | else | |
929 | next = next_interval (i); | |
81f6e55f | 930 | |
77c7bcb1 | 931 | if (!next) |
1f5e848a | 932 | XSETFASTINT (position, (STRINGP (object) |
d5db4077 | 933 | ? SCHARS (object) |
1f5e848a | 934 | : BUF_ZV (XBUFFER (object)))); |
c7b6dfa6 | 935 | else |
ad077db0 | 936 | XSETFASTINT (position, next->position); |
1f5e848a | 937 | return position; |
041aa96f RS |
938 | } |
939 | ||
77c7bcb1 | 940 | if (!i) |
44214c1b RS |
941 | return limit; |
942 | ||
943 | next = next_interval (i); | |
944 | ||
77c7bcb1 | 945 | while (next && intervals_equal (i, next) |
ad077db0 | 946 | && (NILP (limit) || next->position < XFASTINT (limit))) |
d418ef42 JA |
947 | next = next_interval (next); |
948 | ||
77c7bcb1 | 949 | if (!next |
52c0f270 CY |
950 | || (next->position |
951 | >= (INTEGERP (limit) | |
952 | ? XFASTINT (limit) | |
953 | : (STRINGP (object) | |
954 | ? SCHARS (object) | |
955 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 956 | return limit; |
52c0f270 CY |
957 | else |
958 | return make_number (next->position); | |
19e1c426 RS |
959 | } |
960 | ||
a7ca3326 | 961 | DEFUN ("next-single-property-change", Fnext_single_property_change, |
111b637d | 962 | Snext_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
963 | doc: /* Return the position of next property change for a specific property. |
964 | Scans characters forward from POSITION till it finds | |
965 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
966 | If the optional third argument OBJECT is a buffer (or nil, which means |
967 | the current buffer), POSITION is a buffer position (integer or marker). | |
968 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
969 | The property values are compared with `eq'. |
970 | Return nil if the property is constant all the way to the end of OBJECT. | |
971 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
972 | ||
973 | If the optional fourth argument LIMIT is non-nil, don't search | |
974 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 975 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
976 | { |
977 | register INTERVAL i, next; | |
978 | register Lisp_Object here_val; | |
979 | ||
5fbe2a44 | 980 | if (NILP (object)) |
c8a4fc3d | 981 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 982 | |
1387d54e | 983 | if (!NILP (limit)) |
b7826503 | 984 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 985 | |
1f5e848a | 986 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 987 | if (!i) |
111b637d | 988 | return limit; |
9c79dd1b | 989 | |
6a0486dd | 990 | here_val = textget (i->plist, prop); |
9c79dd1b | 991 | next = next_interval (i); |
77c7bcb1 | 992 | while (next |
111b637d | 993 | && EQ (here_val, textget (next->plist, prop)) |
ad077db0 | 994 | && (NILP (limit) || next->position < XFASTINT (limit))) |
9c79dd1b JA |
995 | next = next_interval (next); |
996 | ||
77c7bcb1 | 997 | if (!next |
52c0f270 CY |
998 | || (next->position |
999 | >= (INTEGERP (limit) | |
1000 | ? XFASTINT (limit) | |
1001 | : (STRINGP (object) | |
1002 | ? SCHARS (object) | |
1003 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 1004 | return limit; |
52c0f270 CY |
1005 | else |
1006 | return make_number (next->position); | |
9c79dd1b JA |
1007 | } |
1008 | ||
a7ca3326 | 1009 | DEFUN ("previous-property-change", Fprevious_property_change, |
111b637d | 1010 | Sprevious_property_change, 1, 3, 0, |
8c1a1077 PJ |
1011 | doc: /* Return the position of previous property change. |
1012 | Scans characters backwards from POSITION in OBJECT till it finds | |
1013 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
1014 | If the optional second argument OBJECT is a buffer (or nil, which means |
1015 | the current buffer), POSITION is a buffer position (integer or marker). | |
1016 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1017 | Return nil if the property is constant all the way to the start of OBJECT. |
1018 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1019 | ||
1020 | If the optional third argument LIMIT is non-nil, don't search | |
1021 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1022 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
1023 | { |
1024 | register INTERVAL i, previous; | |
1025 | ||
5fbe2a44 | 1026 | if (NILP (object)) |
c8a4fc3d | 1027 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1028 | |
1387d54e | 1029 | if (!NILP (limit)) |
b7826503 | 1030 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1031 | |
1f5e848a | 1032 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 1033 | if (!i) |
111b637d | 1034 | return limit; |
d418ef42 | 1035 | |
53b7feec | 1036 | /* Start with the interval containing the char before point. */ |
1f5e848a | 1037 | if (i->position == XFASTINT (position)) |
53b7feec RS |
1038 | i = previous_interval (i); |
1039 | ||
d418ef42 | 1040 | previous = previous_interval (i); |
77c7bcb1 | 1041 | while (previous && intervals_equal (previous, i) |
111b637d | 1042 | && (NILP (limit) |
ad077db0 | 1043 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
d418ef42 | 1044 | previous = previous_interval (previous); |
d418ef42 | 1045 | |
77c7bcb1 | 1046 | if (!previous |
52c0f270 CY |
1047 | || (previous->position + LENGTH (previous) |
1048 | <= (INTEGERP (limit) | |
1049 | ? XFASTINT (limit) | |
1050 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1051 | return limit; | |
1052 | else | |
1053 | return make_number (previous->position + LENGTH (previous)); | |
d418ef42 JA |
1054 | } |
1055 | ||
a7ca3326 | 1056 | DEFUN ("previous-single-property-change", Fprevious_single_property_change, |
111b637d | 1057 | Sprevious_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
1058 | doc: /* Return the position of previous property change for a specific property. |
1059 | Scans characters backward from POSITION till it finds | |
1060 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
1061 | If the optional third argument OBJECT is a buffer (or nil, which means |
1062 | the current buffer), POSITION is a buffer position (integer or marker). | |
1063 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1064 | The property values are compared with `eq'. |
1065 | Return nil if the property is constant all the way to the start of OBJECT. | |
1066 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1067 | ||
1068 | If the optional fourth argument LIMIT is non-nil, don't search | |
1069 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1070 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
1071 | { |
1072 | register INTERVAL i, previous; | |
1073 | register Lisp_Object here_val; | |
1074 | ||
5fbe2a44 | 1075 | if (NILP (object)) |
c8a4fc3d | 1076 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1077 | |
1387d54e | 1078 | if (!NILP (limit)) |
b7826503 | 1079 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1080 | |
1f5e848a | 1081 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1082 | |
53b7feec | 1083 | /* Start with the interval containing the char before point. */ |
77c7bcb1 | 1084 | if (i && i->position == XFASTINT (position)) |
53b7feec RS |
1085 | i = previous_interval (i); |
1086 | ||
77c7bcb1 | 1087 | if (!i) |
6873cfa3 KH |
1088 | return limit; |
1089 | ||
6a0486dd | 1090 | here_val = textget (i->plist, prop); |
9c79dd1b | 1091 | previous = previous_interval (i); |
77c7bcb1 | 1092 | while (previous |
111b637d RS |
1093 | && EQ (here_val, textget (previous->plist, prop)) |
1094 | && (NILP (limit) | |
ad077db0 | 1095 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
9c79dd1b | 1096 | previous = previous_interval (previous); |
9c79dd1b | 1097 | |
77c7bcb1 | 1098 | if (!previous |
52c0f270 CY |
1099 | || (previous->position + LENGTH (previous) |
1100 | <= (INTEGERP (limit) | |
1101 | ? XFASTINT (limit) | |
1102 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1103 | return limit; | |
1104 | else | |
1105 | return make_number (previous->position + LENGTH (previous)); | |
9c79dd1b | 1106 | } |
fcab51aa | 1107 | \f |
c98da214 RS |
1108 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1109 | ||
a7ca3326 | 1110 | DEFUN ("add-text-properties", Fadd_text_properties, |
5fbe2a44 | 1111 | Sadd_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1112 | doc: /* Add properties to the text from START to END. |
1113 | The third argument PROPERTIES is a property list | |
81f6e55f FP |
1114 | specifying the property values to add. If the optional fourth argument |
1115 | OBJECT is a buffer (or nil, which means the current buffer), | |
1116 | START and END are buffer positions (integers or markers). | |
1117 | If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 | 1118 | Return t if any property value actually changed, nil otherwise. */) |
5842a27b | 1119 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 JA |
1120 | { |
1121 | register INTERVAL i, unchanged; | |
d311d28c | 1122 | register ptrdiff_t s, len; |
2452438f | 1123 | register int modified = 0; |
c98da214 | 1124 | struct gcpro gcpro1; |
d418ef42 JA |
1125 | |
1126 | properties = validate_plist (properties); | |
1127 | if (NILP (properties)) | |
1128 | return Qnil; | |
1129 | ||
5fbe2a44 | 1130 | if (NILP (object)) |
c8a4fc3d | 1131 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1132 | |
d418ef42 | 1133 | i = validate_interval_range (object, &start, &end, hard); |
77c7bcb1 | 1134 | if (!i) |
d418ef42 JA |
1135 | return Qnil; |
1136 | ||
1137 | s = XINT (start); | |
1138 | len = XINT (end) - s; | |
1139 | ||
c98da214 RS |
1140 | /* No need to protect OBJECT, because we GC only if it's a buffer, |
1141 | and live buffers are always protected. */ | |
1142 | GCPRO1 (properties); | |
1143 | ||
d418ef42 | 1144 | /* If we're not starting on an interval boundary, we have to |
cdf3e5a2 | 1145 | split this interval. */ |
d418ef42 JA |
1146 | if (i->position != s) |
1147 | { | |
1148 | /* If this interval already has the properties, we can | |
cdf3e5a2 | 1149 | skip it. */ |
d418ef42 JA |
1150 | if (interval_has_all_properties (properties, i)) |
1151 | { | |
d311d28c | 1152 | ptrdiff_t got = (LENGTH (i) - (s - i->position)); |
d418ef42 | 1153 | if (got >= len) |
64db1307 | 1154 | RETURN_UNGCPRO (Qnil); |
d418ef42 | 1155 | len -= got; |
05d5b93e | 1156 | i = next_interval (i); |
d418ef42 JA |
1157 | } |
1158 | else | |
1159 | { | |
1160 | unchanged = i; | |
ad9c1940 | 1161 | i = split_interval_right (unchanged, s - unchanged->position); |
d418ef42 | 1162 | copy_properties (unchanged, i); |
d418ef42 JA |
1163 | } |
1164 | } | |
1165 | ||
2a631db1 | 1166 | if (BUFFERP (object)) |
3e145152 | 1167 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1168 | |
daa5e28f | 1169 | /* We are at the beginning of interval I, with LEN chars to scan. */ |
caa31568 | 1170 | for (;;) |
d418ef42 | 1171 | { |
cce7fefc | 1172 | eassert (i != 0); |
d4b530ad | 1173 | |
d418ef42 JA |
1174 | if (LENGTH (i) >= len) |
1175 | { | |
c98da214 RS |
1176 | /* We can UNGCPRO safely here, because there will be just |
1177 | one more chance to gc, in the next call to add_properties, | |
1178 | and after that we will not need PROPERTIES or OBJECT again. */ | |
1179 | UNGCPRO; | |
1180 | ||
d418ef42 | 1181 | if (interval_has_all_properties (properties, i)) |
26c76ace | 1182 | { |
2a631db1 RS |
1183 | if (BUFFERP (object)) |
1184 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1185 | XINT (end) - XINT (start)); | |
26c76ace RS |
1186 | |
1187 | return modified ? Qt : Qnil; | |
1188 | } | |
d418ef42 JA |
1189 | |
1190 | if (LENGTH (i) == len) | |
1191 | { | |
d4b530ad | 1192 | add_properties (properties, i, object); |
2a631db1 RS |
1193 | if (BUFFERP (object)) |
1194 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1195 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1196 | return Qt; |
1197 | } | |
1198 | ||
1199 | /* i doesn't have the properties, and goes past the change limit */ | |
1200 | unchanged = i; | |
ad9c1940 | 1201 | i = split_interval_left (unchanged, len); |
d418ef42 | 1202 | copy_properties (unchanged, i); |
d4b530ad | 1203 | add_properties (properties, i, object); |
2a631db1 RS |
1204 | if (BUFFERP (object)) |
1205 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1206 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1207 | return Qt; |
1208 | } | |
1209 | ||
1210 | len -= LENGTH (i); | |
d4b530ad | 1211 | modified += add_properties (properties, i, object); |
d418ef42 JA |
1212 | i = next_interval (i); |
1213 | } | |
1214 | } | |
1215 | ||
c98da214 RS |
1216 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1217 | ||
a7ca3326 | 1218 | DEFUN ("put-text-property", Fput_text_property, |
d4b530ad | 1219 | Sput_text_property, 4, 5, 0, |
8c1a1077 PJ |
1220 | doc: /* Set one property of the text from START to END. |
1221 | The third and fourth arguments PROPERTY and VALUE | |
1222 | specify the property to add. | |
81f6e55f FP |
1223 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1224 | the current buffer), START and END are buffer positions (integers or | |
1225 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1226 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
d4b530ad RS |
1227 | { |
1228 | Fadd_text_properties (start, end, | |
1f5e848a | 1229 | Fcons (property, Fcons (value, Qnil)), |
d4b530ad RS |
1230 | object); |
1231 | return Qnil; | |
1232 | } | |
1233 | ||
a7ca3326 | 1234 | DEFUN ("set-text-properties", Fset_text_properties, |
5fbe2a44 | 1235 | Sset_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1236 | doc: /* Completely replace properties of text from START to END. |
1237 | The third argument PROPERTIES is the new property list. | |
81f6e55f FP |
1238 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1239 | the current buffer), START and END are buffer positions (integers or | |
1240 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 PJ |
1241 | If PROPERTIES is nil, the effect is to remove all properties from |
1242 | the designated part of OBJECT. */) | |
5842a27b | 1243 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
0087ade6 GM |
1244 | { |
1245 | return set_text_properties (start, end, properties, object, Qt); | |
1246 | } | |
1247 | ||
1248 | ||
1249 | /* Replace properties of text from START to END with new list of | |
1250 | properties PROPERTIES. OBJECT is the buffer or string containing | |
1251 | the text. OBJECT nil means use the current buffer. | |
9c345213 AM |
1252 | COHERENT_CHANGE_P nil means this is being called as an internal |
1253 | subroutine, rather than as a change primitive with checking of | |
1254 | read-only, invoking change hooks, etc.. Value is nil if the | |
1255 | function _detected_ that it did not replace any properties, non-nil | |
1256 | otherwise. */ | |
0087ade6 GM |
1257 | |
1258 | Lisp_Object | |
971de7fb | 1259 | set_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object, Lisp_Object coherent_change_p) |
d418ef42 | 1260 | { |
28ff4293 | 1261 | register INTERVAL i; |
33d7d0df RS |
1262 | Lisp_Object ostart, oend; |
1263 | ||
1264 | ostart = start; | |
1265 | oend = end; | |
d418ef42 | 1266 | |
1f5e848a | 1267 | properties = validate_plist (properties); |
d418ef42 | 1268 | |
5fbe2a44 | 1269 | if (NILP (object)) |
c8a4fc3d | 1270 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1271 | |
919fa9cb RS |
1272 | /* If we want no properties for a whole string, |
1273 | get rid of its intervals. */ | |
1f5e848a | 1274 | if (NILP (properties) && STRINGP (object) |
919fa9cb | 1275 | && XFASTINT (start) == 0 |
d5db4077 | 1276 | && XFASTINT (end) == SCHARS (object)) |
919fa9cb | 1277 | { |
0c94c8d6 | 1278 | if (!string_intervals (object)) |
537562fa | 1279 | return Qnil; |
26c76ace | 1280 | |
0c94c8d6 | 1281 | set_string_intervals (object, NULL); |
919fa9cb RS |
1282 | return Qt; |
1283 | } | |
1284 | ||
facc570e | 1285 | i = validate_interval_range (object, &start, &end, soft); |
919fa9cb | 1286 | |
77c7bcb1 | 1287 | if (!i) |
facc570e | 1288 | { |
1f5e848a EN |
1289 | /* If buffer has no properties, and we want none, return now. */ |
1290 | if (NILP (properties)) | |
facc570e RS |
1291 | return Qnil; |
1292 | ||
33d7d0df RS |
1293 | /* Restore the original START and END values |
1294 | because validate_interval_range increments them for strings. */ | |
1295 | start = ostart; | |
1296 | end = oend; | |
1297 | ||
facc570e RS |
1298 | i = validate_interval_range (object, &start, &end, hard); |
1299 | /* This can return if start == end. */ | |
77c7bcb1 | 1300 | if (!i) |
facc570e RS |
1301 | return Qnil; |
1302 | } | |
d418ef42 | 1303 | |
9c345213 | 1304 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
3e145152 | 1305 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1306 | |
78ff4175 RS |
1307 | set_text_properties_1 (start, end, properties, object, i); |
1308 | ||
9c345213 | 1309 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
78ff4175 RS |
1310 | signal_after_change (XINT (start), XINT (end) - XINT (start), |
1311 | XINT (end) - XINT (start)); | |
1312 | return Qt; | |
1313 | } | |
1314 | ||
1315 | /* Replace properties of text from START to END with new list of | |
1316 | properties PROPERTIES. BUFFER is the buffer containing | |
1317 | the text. This does not obey any hooks. | |
1318 | You can provide the interval that START is located in as I, | |
ce768453 | 1319 | or pass NULL for I and this function will find it. |
49f68fd2 | 1320 | START and END can be in any order. */ |
78ff4175 RS |
1321 | |
1322 | void | |
971de7fb | 1323 | set_text_properties_1 (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object buffer, INTERVAL i) |
78ff4175 | 1324 | { |
77c7bcb1 | 1325 | register INTERVAL prev_changed = NULL; |
d311d28c | 1326 | register ptrdiff_t s, len; |
78ff4175 RS |
1327 | INTERVAL unchanged; |
1328 | ||
67769ffc | 1329 | if (XINT (start) < XINT (end)) |
49f68fd2 | 1330 | { |
67769ffc PE |
1331 | s = XINT (start); |
1332 | len = XINT (end) - s; | |
49f68fd2 | 1333 | } |
67769ffc PE |
1334 | else if (XINT (end) < XINT (start)) |
1335 | { | |
1336 | s = XINT (end); | |
1337 | len = XINT (start) - s; | |
1338 | } | |
1339 | else | |
1340 | return; | |
49f68fd2 | 1341 | |
8707c1e5 | 1342 | if (i == NULL) |
0c94c8d6 | 1343 | i = find_interval (buffer_intervals (XBUFFER (buffer)), s); |
78ff4175 | 1344 | |
d418ef42 JA |
1345 | if (i->position != s) |
1346 | { | |
1347 | unchanged = i; | |
ad9c1940 | 1348 | i = split_interval_right (unchanged, s - unchanged->position); |
7855e674 | 1349 | |
d418ef42 JA |
1350 | if (LENGTH (i) > len) |
1351 | { | |
9c79dd1b | 1352 | copy_properties (unchanged, i); |
ad9c1940 | 1353 | i = split_interval_left (i, len); |
78ff4175 RS |
1354 | set_properties (properties, i, buffer); |
1355 | return; | |
d418ef42 JA |
1356 | } |
1357 | ||
78ff4175 | 1358 | set_properties (properties, i, buffer); |
daa5e28f | 1359 | |
9c79dd1b | 1360 | if (LENGTH (i) == len) |
78ff4175 | 1361 | return; |
9c79dd1b JA |
1362 | |
1363 | prev_changed = i; | |
d418ef42 JA |
1364 | len -= LENGTH (i); |
1365 | i = next_interval (i); | |
1366 | } | |
1367 | ||
1e792e4d PE |
1368 | /* We are starting at the beginning of an interval I. LEN is positive. */ |
1369 | do | |
d418ef42 | 1370 | { |
cce7fefc | 1371 | eassert (i != 0); |
d4b530ad | 1372 | |
d418ef42 JA |
1373 | if (LENGTH (i) >= len) |
1374 | { | |
cd7d971d | 1375 | if (LENGTH (i) > len) |
ad9c1940 | 1376 | i = split_interval_left (i, len); |
d418ef42 | 1377 | |
6f232881 RS |
1378 | /* We have to call set_properties even if we are going to |
1379 | merge the intervals, so as to make the undo records | |
1380 | and cause redisplay to happen. */ | |
78ff4175 | 1381 | set_properties (properties, i, buffer); |
77c7bcb1 | 1382 | if (prev_changed) |
9c79dd1b | 1383 | merge_interval_left (i); |
78ff4175 | 1384 | return; |
d418ef42 JA |
1385 | } |
1386 | ||
1387 | len -= LENGTH (i); | |
6f232881 RS |
1388 | |
1389 | /* We have to call set_properties even if we are going to | |
1390 | merge the intervals, so as to make the undo records | |
1391 | and cause redisplay to happen. */ | |
78ff4175 | 1392 | set_properties (properties, i, buffer); |
77c7bcb1 | 1393 | if (!prev_changed) |
6f232881 | 1394 | prev_changed = i; |
9c79dd1b JA |
1395 | else |
1396 | prev_changed = i = merge_interval_left (i); | |
1397 | ||
d418ef42 JA |
1398 | i = next_interval (i); |
1399 | } | |
1e792e4d | 1400 | while (len > 0); |
d418ef42 JA |
1401 | } |
1402 | ||
a7ca3326 | 1403 | DEFUN ("remove-text-properties", Fremove_text_properties, |
5fbe2a44 | 1404 | Sremove_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1405 | doc: /* Remove some properties from text from START to END. |
1406 | The third argument PROPERTIES is a property list | |
1407 | whose property names specify the properties to remove. | |
1408 | \(The values stored in PROPERTIES are ignored.) | |
81f6e55f FP |
1409 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1410 | the current buffer), START and END are buffer positions (integers or | |
1411 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
1412 | Return t if any property was actually removed, nil otherwise. | |
1413 | ||
518c0b83 | 1414 | Use `set-text-properties' if you want to remove all text properties. */) |
5842a27b | 1415 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 JA |
1416 | { |
1417 | register INTERVAL i, unchanged; | |
d311d28c | 1418 | register ptrdiff_t s, len; |
2452438f | 1419 | register int modified = 0; |
d418ef42 | 1420 | |
5fbe2a44 | 1421 | if (NILP (object)) |
c8a4fc3d | 1422 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1423 | |
d418ef42 | 1424 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1425 | if (!i) |
d418ef42 JA |
1426 | return Qnil; |
1427 | ||
1428 | s = XINT (start); | |
1429 | len = XINT (end) - s; | |
9c79dd1b | 1430 | |
d418ef42 JA |
1431 | if (i->position != s) |
1432 | { | |
1433 | /* No properties on this first interval -- return if | |
cdf3e5a2 | 1434 | it covers the entire region. */ |
1f5e848a | 1435 | if (! interval_has_some_properties (properties, i)) |
d418ef42 | 1436 | { |
d311d28c | 1437 | ptrdiff_t got = (LENGTH (i) - (s - i->position)); |
d418ef42 JA |
1438 | if (got >= len) |
1439 | return Qnil; | |
1440 | len -= got; | |
05d5b93e | 1441 | i = next_interval (i); |
d418ef42 | 1442 | } |
daa5e28f RS |
1443 | /* Split away the beginning of this interval; what we don't |
1444 | want to modify. */ | |
d418ef42 JA |
1445 | else |
1446 | { | |
1447 | unchanged = i; | |
ad9c1940 | 1448 | i = split_interval_right (unchanged, s - unchanged->position); |
d418ef42 | 1449 | copy_properties (unchanged, i); |
d418ef42 JA |
1450 | } |
1451 | } | |
1452 | ||
2a631db1 | 1453 | if (BUFFERP (object)) |
3e145152 | 1454 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1455 | |
d418ef42 | 1456 | /* We are at the beginning of an interval, with len to scan */ |
caa31568 | 1457 | for (;;) |
d418ef42 | 1458 | { |
cce7fefc | 1459 | eassert (i != 0); |
d4b530ad | 1460 | |
d418ef42 JA |
1461 | if (LENGTH (i) >= len) |
1462 | { | |
1f5e848a | 1463 | if (! interval_has_some_properties (properties, i)) |
d418ef42 JA |
1464 | return modified ? Qt : Qnil; |
1465 | ||
1466 | if (LENGTH (i) == len) | |
1467 | { | |
11713b6d RS |
1468 | remove_properties (properties, Qnil, i, object); |
1469 | if (BUFFERP (object)) | |
1470 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1471 | XINT (end) - XINT (start)); | |
1472 | return Qt; | |
1473 | } | |
1474 | ||
1475 | /* i has the properties, and goes past the change limit */ | |
1476 | unchanged = i; | |
1477 | i = split_interval_left (i, len); | |
1478 | copy_properties (unchanged, i); | |
1479 | remove_properties (properties, Qnil, i, object); | |
1480 | if (BUFFERP (object)) | |
1481 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1482 | XINT (end) - XINT (start)); | |
1483 | return Qt; | |
1484 | } | |
1485 | ||
1486 | len -= LENGTH (i); | |
1487 | modified += remove_properties (properties, Qnil, i, object); | |
1488 | i = next_interval (i); | |
1489 | } | |
1490 | } | |
1491 | ||
a7ca3326 | 1492 | DEFUN ("remove-list-of-text-properties", Fremove_list_of_text_properties, |
11713b6d RS |
1493 | Sremove_list_of_text_properties, 3, 4, 0, |
1494 | doc: /* Remove some properties from text from START to END. | |
1495 | The third argument LIST-OF-PROPERTIES is a list of property names to remove. | |
81f6e55f FP |
1496 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1497 | the current buffer), START and END are buffer positions (integers or | |
1498 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
11713b6d | 1499 | Return t if any property was actually removed, nil otherwise. */) |
5842a27b | 1500 | (Lisp_Object start, Lisp_Object end, Lisp_Object list_of_properties, Lisp_Object object) |
11713b6d RS |
1501 | { |
1502 | register INTERVAL i, unchanged; | |
d311d28c | 1503 | register ptrdiff_t s, len; |
2452438f | 1504 | register int modified = 0; |
11713b6d RS |
1505 | Lisp_Object properties; |
1506 | properties = list_of_properties; | |
1507 | ||
1508 | if (NILP (object)) | |
1509 | XSETBUFFER (object, current_buffer); | |
1510 | ||
1511 | i = validate_interval_range (object, &start, &end, soft); | |
77c7bcb1 | 1512 | if (!i) |
11713b6d RS |
1513 | return Qnil; |
1514 | ||
1515 | s = XINT (start); | |
1516 | len = XINT (end) - s; | |
1517 | ||
1518 | if (i->position != s) | |
1519 | { | |
1520 | /* No properties on this first interval -- return if | |
1521 | it covers the entire region. */ | |
1522 | if (! interval_has_some_properties_list (properties, i)) | |
1523 | { | |
d311d28c | 1524 | ptrdiff_t got = (LENGTH (i) - (s - i->position)); |
11713b6d RS |
1525 | if (got >= len) |
1526 | return Qnil; | |
1527 | len -= got; | |
1528 | i = next_interval (i); | |
1529 | } | |
1530 | /* Split away the beginning of this interval; what we don't | |
1531 | want to modify. */ | |
1532 | else | |
1533 | { | |
1534 | unchanged = i; | |
1535 | i = split_interval_right (unchanged, s - unchanged->position); | |
1536 | copy_properties (unchanged, i); | |
1537 | } | |
1538 | } | |
1539 | ||
9b17c9f5 LH |
1540 | /* We are at the beginning of an interval, with len to scan. |
1541 | The flag `modified' records if changes have been made. | |
1542 | When object is a buffer, we must call modify_region before changes are | |
1543 | made and signal_after_change when we are done. | |
e0f24100 GM |
1544 | We call modify_region before calling remove_properties if modified == 0, |
1545 | and we call signal_after_change before returning if modified != 0. */ | |
11713b6d RS |
1546 | for (;;) |
1547 | { | |
cce7fefc | 1548 | eassert (i != 0); |
11713b6d RS |
1549 | |
1550 | if (LENGTH (i) >= len) | |
1551 | { | |
1552 | if (! interval_has_some_properties_list (properties, i)) | |
ef1b0ba7 SM |
1553 | { |
1554 | if (modified) | |
1555 | { | |
1556 | if (BUFFERP (object)) | |
1557 | signal_after_change (XINT (start), | |
1558 | XINT (end) - XINT (start), | |
1559 | XINT (end) - XINT (start)); | |
1560 | return Qt; | |
1561 | } | |
1562 | else | |
1563 | return Qnil; | |
1564 | } | |
1565 | else if (LENGTH (i) == len) | |
11713b6d | 1566 | { |
9b17c9f5 | 1567 | if (!modified && BUFFERP (object)) |
3e145152 | 1568 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
11713b6d | 1569 | remove_properties (Qnil, properties, i, object); |
2a631db1 RS |
1570 | if (BUFFERP (object)) |
1571 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1572 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1573 | return Qt; |
1574 | } | |
ef1b0ba7 SM |
1575 | else |
1576 | { /* i has the properties, and goes past the change limit. */ | |
1577 | unchanged = i; | |
1578 | i = split_interval_left (i, len); | |
1579 | copy_properties (unchanged, i); | |
1580 | if (!modified && BUFFERP (object)) | |
1581 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); | |
1582 | remove_properties (Qnil, properties, i, object); | |
1583 | if (BUFFERP (object)) | |
1584 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1585 | XINT (end) - XINT (start)); | |
1586 | return Qt; | |
1587 | } | |
d418ef42 | 1588 | } |
9b17c9f5 LH |
1589 | if (interval_has_some_properties_list (properties, i)) |
1590 | { | |
1591 | if (!modified && BUFFERP (object)) | |
3e145152 | 1592 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
9b17c9f5 LH |
1593 | remove_properties (Qnil, properties, i, object); |
1594 | modified = 1; | |
1595 | } | |
d418ef42 | 1596 | len -= LENGTH (i); |
d418ef42 JA |
1597 | i = next_interval (i); |
1598 | } | |
1599 | } | |
fcab51aa | 1600 | \f |
a7ca3326 | 1601 | DEFUN ("text-property-any", Ftext_property_any, |
ad9c1940 | 1602 | Stext_property_any, 4, 5, 0, |
fa463103 | 1603 | doc: /* Check text from START to END for property PROPERTY equaling VALUE. |
8c1a1077 PJ |
1604 | If so, return the position of the first character whose property PROPERTY |
1605 | is `eq' to VALUE. Otherwise return nil. | |
81f6e55f FP |
1606 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1607 | the current buffer), START and END are buffer positions (integers or | |
1608 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1609 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1610 | { |
1611 | register INTERVAL i; | |
d311d28c | 1612 | register ptrdiff_t e, pos; |
ad9c1940 JB |
1613 | |
1614 | if (NILP (object)) | |
c8a4fc3d | 1615 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1616 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1617 | if (!i) |
2084fddb | 1618 | return (!NILP (value) || EQ (start, end) ? Qnil : start); |
ad9c1940 JB |
1619 | e = XINT (end); |
1620 | ||
77c7bcb1 | 1621 | while (i) |
ad9c1940 JB |
1622 | { |
1623 | if (i->position >= e) | |
1624 | break; | |
1f5e848a | 1625 | if (EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1626 | { |
1627 | pos = i->position; | |
1628 | if (pos < XINT (start)) | |
1629 | pos = XINT (start); | |
ad077db0 | 1630 | return make_number (pos); |
ad9c1940 JB |
1631 | } |
1632 | i = next_interval (i); | |
1633 | } | |
1634 | return Qnil; | |
1635 | } | |
1636 | ||
1637 | DEFUN ("text-property-not-all", Ftext_property_not_all, | |
1638 | Stext_property_not_all, 4, 5, 0, | |
fa463103 | 1639 | doc: /* Check text from START to END for property PROPERTY not equaling VALUE. |
8c1a1077 PJ |
1640 | If so, return the position of the first character whose property PROPERTY |
1641 | is not `eq' to VALUE. Otherwise, return nil. | |
81f6e55f FP |
1642 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1643 | the current buffer), START and END are buffer positions (integers or | |
1644 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1645 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1646 | { |
1647 | register INTERVAL i; | |
d311d28c | 1648 | register ptrdiff_t s, e; |
ad9c1940 JB |
1649 | |
1650 | if (NILP (object)) | |
c8a4fc3d | 1651 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1652 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1653 | if (!i) |
916a3119 | 1654 | return (NILP (value) || EQ (start, end)) ? Qnil : start; |
ad9c1940 JB |
1655 | s = XINT (start); |
1656 | e = XINT (end); | |
1657 | ||
77c7bcb1 | 1658 | while (i) |
ad9c1940 JB |
1659 | { |
1660 | if (i->position >= e) | |
1661 | break; | |
1f5e848a | 1662 | if (! EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1663 | { |
1664 | if (i->position > s) | |
1665 | s = i->position; | |
ad077db0 | 1666 | return make_number (s); |
ad9c1940 JB |
1667 | } |
1668 | i = next_interval (i); | |
1669 | } | |
1670 | return Qnil; | |
1671 | } | |
e138dfdc MB |
1672 | |
1673 | \f | |
1674 | /* Return the direction from which the text-property PROP would be | |
1675 | inherited by any new text inserted at POS: 1 if it would be | |
1676 | inherited from the char after POS, -1 if it would be inherited from | |
6f716644 SM |
1677 | the char before POS, and 0 if from neither. |
1678 | BUFFER can be either a buffer or nil (meaning current buffer). */ | |
e138dfdc MB |
1679 | |
1680 | int | |
971de7fb | 1681 | text_property_stickiness (Lisp_Object prop, Lisp_Object pos, Lisp_Object buffer) |
e138dfdc MB |
1682 | { |
1683 | Lisp_Object prev_pos, front_sticky; | |
1684 | int is_rear_sticky = 1, is_front_sticky = 0; /* defaults */ | |
cabf1cac | 1685 | Lisp_Object defalt = Fassq (prop, Vtext_property_default_nonsticky); |
e138dfdc | 1686 | |
6f716644 SM |
1687 | if (NILP (buffer)) |
1688 | XSETBUFFER (buffer, current_buffer); | |
1689 | ||
cabf1cac SM |
1690 | if (CONSP (defalt) && !NILP (XCDR (defalt))) |
1691 | is_rear_sticky = 0; | |
1692 | ||
6f716644 | 1693 | if (XINT (pos) > BUF_BEGV (XBUFFER (buffer))) |
e138dfdc MB |
1694 | /* Consider previous character. */ |
1695 | { | |
1696 | Lisp_Object rear_non_sticky; | |
1697 | ||
1698 | prev_pos = make_number (XINT (pos) - 1); | |
6f716644 | 1699 | rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, buffer); |
e138dfdc MB |
1700 | |
1701 | if (!NILP (CONSP (rear_non_sticky) | |
1702 | ? Fmemq (prop, rear_non_sticky) | |
1703 | : rear_non_sticky)) | |
1704 | /* PROP is rear-non-sticky. */ | |
1705 | is_rear_sticky = 0; | |
1706 | } | |
506d2f9a CY |
1707 | else |
1708 | return 0; | |
e138dfdc MB |
1709 | |
1710 | /* Consider following character. */ | |
506d2f9a CY |
1711 | /* This signals an arg-out-of-range error if pos is outside the |
1712 | buffer's accessible range. */ | |
6f716644 | 1713 | front_sticky = Fget_text_property (pos, Qfront_sticky, buffer); |
e138dfdc MB |
1714 | |
1715 | if (EQ (front_sticky, Qt) | |
1716 | || (CONSP (front_sticky) | |
1717 | && !NILP (Fmemq (prop, front_sticky)))) | |
1718 | /* PROP is inherited from after. */ | |
1719 | is_front_sticky = 1; | |
1720 | ||
1721 | /* Simple cases, where the properties are consistent. */ | |
1722 | if (is_rear_sticky && !is_front_sticky) | |
1723 | return -1; | |
1724 | else if (!is_rear_sticky && is_front_sticky) | |
1725 | return 1; | |
1726 | else if (!is_rear_sticky && !is_front_sticky) | |
1727 | return 0; | |
1728 | ||
1729 | /* The stickiness properties are inconsistent, so we have to | |
1730 | disambiguate. Basically, rear-sticky wins, _except_ if the | |
1731 | property that would be inherited has a value of nil, in which case | |
1732 | front-sticky wins. */ | |
6f716644 SM |
1733 | if (XINT (pos) == BUF_BEGV (XBUFFER (buffer)) |
1734 | || NILP (Fget_text_property (prev_pos, prop, buffer))) | |
e138dfdc MB |
1735 | return 1; |
1736 | else | |
1737 | return -1; | |
1738 | } | |
1739 | ||
fcab51aa | 1740 | \f |
e2ad650c | 1741 | /* Copying properties between objects. */ |
15e4954b | 1742 | |
e2ad650c | 1743 | /* Add properties from START to END of SRC, starting at POS in DEST. |
c98da214 RS |
1744 | SRC and DEST may each refer to strings or buffers. |
1745 | Optional sixth argument PROP causes only that property to be copied. | |
1746 | Properties are copied to DEST as if by `add-text-properties'. | |
1747 | Return t if any property value actually changed, nil otherwise. */ | |
1748 | ||
1749 | /* Note this can GC when DEST is a buffer. */ | |
ad077db0 | 1750 | |
15e4954b | 1751 | Lisp_Object |
971de7fb | 1752 | copy_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object src, Lisp_Object pos, Lisp_Object dest, Lisp_Object prop) |
15e4954b JB |
1753 | { |
1754 | INTERVAL i; | |
1755 | Lisp_Object res; | |
1756 | Lisp_Object stuff; | |
1757 | Lisp_Object plist; | |
d311d28c | 1758 | ptrdiff_t s, e, e2, p, len; |
2452438f | 1759 | int modified = 0; |
c98da214 | 1760 | struct gcpro gcpro1, gcpro2; |
15e4954b JB |
1761 | |
1762 | i = validate_interval_range (src, &start, &end, soft); | |
77c7bcb1 | 1763 | if (!i) |
15e4954b JB |
1764 | return Qnil; |
1765 | ||
b7826503 | 1766 | CHECK_NUMBER_COERCE_MARKER (pos); |
15e4954b JB |
1767 | { |
1768 | Lisp_Object dest_start, dest_end; | |
1769 | ||
d311d28c PE |
1770 | e = XINT (pos) + (XINT (end) - XINT (start)); |
1771 | if (MOST_POSITIVE_FIXNUM < e) | |
1772 | args_out_of_range (pos, end); | |
15e4954b | 1773 | dest_start = pos; |
d311d28c | 1774 | XSETFASTINT (dest_end, e); |
15e4954b JB |
1775 | /* Apply this to a copy of pos; it will try to increment its arguments, |
1776 | which we don't want. */ | |
1777 | validate_interval_range (dest, &dest_start, &dest_end, soft); | |
1778 | } | |
1779 | ||
1780 | s = XINT (start); | |
1781 | e = XINT (end); | |
1782 | p = XINT (pos); | |
1783 | ||
1784 | stuff = Qnil; | |
1785 | ||
1786 | while (s < e) | |
1787 | { | |
1788 | e2 = i->position + LENGTH (i); | |
1789 | if (e2 > e) | |
1790 | e2 = e; | |
1791 | len = e2 - s; | |
1792 | ||
1793 | plist = i->plist; | |
1794 | if (! NILP (prop)) | |
1795 | while (! NILP (plist)) | |
1796 | { | |
1797 | if (EQ (Fcar (plist), prop)) | |
1798 | { | |
1799 | plist = Fcons (prop, Fcons (Fcar (Fcdr (plist)), Qnil)); | |
1800 | break; | |
1801 | } | |
1802 | plist = Fcdr (Fcdr (plist)); | |
1803 | } | |
1804 | if (! NILP (plist)) | |
1805 | { | |
1806 | /* Must defer modifications to the interval tree in case src | |
cdf3e5a2 | 1807 | and dest refer to the same string or buffer. */ |
15e4954b JB |
1808 | stuff = Fcons (Fcons (make_number (p), |
1809 | Fcons (make_number (p + len), | |
1810 | Fcons (plist, Qnil))), | |
1811 | stuff); | |
1812 | } | |
1813 | ||
1814 | i = next_interval (i); | |
77c7bcb1 | 1815 | if (!i) |
15e4954b JB |
1816 | break; |
1817 | ||
1818 | p += len; | |
1819 | s = i->position; | |
1820 | } | |
1821 | ||
c98da214 RS |
1822 | GCPRO2 (stuff, dest); |
1823 | ||
15e4954b JB |
1824 | while (! NILP (stuff)) |
1825 | { | |
1826 | res = Fcar (stuff); | |
1827 | res = Fadd_text_properties (Fcar (res), Fcar (Fcdr (res)), | |
1828 | Fcar (Fcdr (Fcdr (res))), dest); | |
1829 | if (! NILP (res)) | |
1830 | modified++; | |
1831 | stuff = Fcdr (stuff); | |
1832 | } | |
1833 | ||
c98da214 RS |
1834 | UNGCPRO; |
1835 | ||
15e4954b JB |
1836 | return modified ? Qt : Qnil; |
1837 | } | |
9dd7eec6 GM |
1838 | |
1839 | ||
1840 | /* Return a list representing the text properties of OBJECT between | |
1841 | START and END. if PROP is non-nil, report only on that property. | |
1842 | Each result list element has the form (S E PLIST), where S and E | |
1843 | are positions in OBJECT and PLIST is a property list containing the | |
1844 | text properties of OBJECT between S and E. Value is nil if OBJECT | |
1845 | doesn't contain text properties between START and END. */ | |
1846 | ||
1847 | Lisp_Object | |
971de7fb | 1848 | text_property_list (Lisp_Object object, Lisp_Object start, Lisp_Object end, Lisp_Object prop) |
9dd7eec6 GM |
1849 | { |
1850 | struct interval *i; | |
1851 | Lisp_Object result; | |
9dd7eec6 GM |
1852 | |
1853 | result = Qnil; | |
81f6e55f | 1854 | |
9dd7eec6 | 1855 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1856 | if (i) |
9dd7eec6 | 1857 | { |
d311d28c PE |
1858 | ptrdiff_t s = XINT (start); |
1859 | ptrdiff_t e = XINT (end); | |
81f6e55f | 1860 | |
9dd7eec6 GM |
1861 | while (s < e) |
1862 | { | |
d311d28c | 1863 | ptrdiff_t interval_end, len; |
9dd7eec6 | 1864 | Lisp_Object plist; |
81f6e55f | 1865 | |
9dd7eec6 GM |
1866 | interval_end = i->position + LENGTH (i); |
1867 | if (interval_end > e) | |
1868 | interval_end = e; | |
1869 | len = interval_end - s; | |
81f6e55f | 1870 | |
9dd7eec6 GM |
1871 | plist = i->plist; |
1872 | ||
1873 | if (!NILP (prop)) | |
99784d63 SM |
1874 | for (; CONSP (plist); plist = Fcdr (XCDR (plist))) |
1875 | if (EQ (XCAR (plist), prop)) | |
9dd7eec6 | 1876 | { |
99784d63 | 1877 | plist = Fcons (prop, Fcons (Fcar (XCDR (plist)), Qnil)); |
9dd7eec6 GM |
1878 | break; |
1879 | } | |
1880 | ||
1881 | if (!NILP (plist)) | |
1882 | result = Fcons (Fcons (make_number (s), | |
1883 | Fcons (make_number (s + len), | |
1884 | Fcons (plist, Qnil))), | |
1885 | result); | |
81f6e55f | 1886 | |
9dd7eec6 | 1887 | i = next_interval (i); |
77c7bcb1 | 1888 | if (!i) |
9dd7eec6 GM |
1889 | break; |
1890 | s = i->position; | |
1891 | } | |
1892 | } | |
81f6e55f | 1893 | |
9dd7eec6 GM |
1894 | return result; |
1895 | } | |
1896 | ||
1897 | ||
1898 | /* Add text properties to OBJECT from LIST. LIST is a list of triples | |
1899 | (START END PLIST), where START and END are positions and PLIST is a | |
1900 | property list containing the text properties to add. Adjust START | |
1901 | and END positions by DELTA before adding properties. Value is | |
1902 | non-zero if OBJECT was modified. */ | |
1903 | ||
1904 | int | |
971de7fb | 1905 | add_text_properties_from_list (Lisp_Object object, Lisp_Object list, Lisp_Object delta) |
9dd7eec6 GM |
1906 | { |
1907 | struct gcpro gcpro1, gcpro2; | |
1908 | int modified_p = 0; | |
81f6e55f | 1909 | |
9dd7eec6 | 1910 | GCPRO2 (list, object); |
81f6e55f | 1911 | |
9dd7eec6 GM |
1912 | for (; CONSP (list); list = XCDR (list)) |
1913 | { | |
1914 | Lisp_Object item, start, end, plist, tem; | |
81f6e55f | 1915 | |
9dd7eec6 GM |
1916 | item = XCAR (list); |
1917 | start = make_number (XINT (XCAR (item)) + XINT (delta)); | |
1918 | end = make_number (XINT (XCAR (XCDR (item))) + XINT (delta)); | |
1919 | plist = XCAR (XCDR (XCDR (item))); | |
81f6e55f | 1920 | |
9dd7eec6 GM |
1921 | tem = Fadd_text_properties (start, end, plist, object); |
1922 | if (!NILP (tem)) | |
1923 | modified_p = 1; | |
1924 | } | |
1925 | ||
1926 | UNGCPRO; | |
1927 | return modified_p; | |
1928 | } | |
1929 | ||
1930 | ||
1931 | ||
e398c61c CY |
1932 | /* Modify end-points of ranges in LIST destructively, and return the |
1933 | new list. LIST is a list as returned from text_property_list. | |
1934 | Discard properties that begin at or after NEW_END, and limit | |
1935 | end-points to NEW_END. */ | |
9dd7eec6 | 1936 | |
e398c61c | 1937 | Lisp_Object |
971de7fb | 1938 | extend_property_ranges (Lisp_Object list, Lisp_Object new_end) |
9dd7eec6 | 1939 | { |
e398c61c | 1940 | Lisp_Object prev = Qnil, head = list; |
d311d28c | 1941 | ptrdiff_t max = XINT (new_end); |
e398c61c CY |
1942 | |
1943 | for (; CONSP (list); prev = list, list = XCDR (list)) | |
9dd7eec6 | 1944 | { |
e398c61c | 1945 | Lisp_Object item, beg, end; |
81f6e55f | 1946 | |
9dd7eec6 | 1947 | item = XCAR (list); |
e398c61c | 1948 | beg = XCAR (item); |
9dd7eec6 GM |
1949 | end = XCAR (XCDR (item)); |
1950 | ||
e398c61c CY |
1951 | if (XINT (beg) >= max) |
1952 | { | |
1953 | /* The start-point is past the end of the new string. | |
1954 | Discard this property. */ | |
1955 | if (EQ (head, list)) | |
1956 | head = XCDR (list); | |
1957 | else | |
1958 | XSETCDR (prev, XCDR (list)); | |
1959 | } | |
1960 | else if (XINT (end) > max) | |
1961 | /* The end-point is past the end of the new string. */ | |
f3fbd155 | 1962 | XSETCAR (XCDR (item), new_end); |
9dd7eec6 | 1963 | } |
e398c61c CY |
1964 | |
1965 | return head; | |
9dd7eec6 GM |
1966 | } |
1967 | ||
1968 | ||
318d2fa8 RS |
1969 | \f |
1970 | /* Call the modification hook functions in LIST, each with START and END. */ | |
1971 | ||
1972 | static void | |
971de7fb | 1973 | call_mod_hooks (Lisp_Object list, Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
1974 | { |
1975 | struct gcpro gcpro1; | |
1976 | GCPRO1 (list); | |
1977 | while (!NILP (list)) | |
1978 | { | |
1979 | call2 (Fcar (list), start, end); | |
1980 | list = Fcdr (list); | |
1981 | } | |
1982 | UNGCPRO; | |
1983 | } | |
1984 | ||
96f90544 RS |
1985 | /* Check for read-only intervals between character positions START ... END, |
1986 | in BUF, and signal an error if we find one. | |
1987 | ||
1988 | Then check for any modification hooks in the range. | |
1989 | Create a list of all these hooks in lexicographic order, | |
1990 | eliminating consecutive extra copies of the same hook. Then call | |
1991 | those hooks in order, with START and END - 1 as arguments. */ | |
15e4954b | 1992 | |
318d2fa8 | 1993 | void |
d1dfb56c | 1994 | verify_interval_modification (struct buffer *buf, |
d311d28c | 1995 | ptrdiff_t start, ptrdiff_t end) |
318d2fa8 | 1996 | { |
0c94c8d6 PE |
1997 | INTERVAL intervals = buffer_intervals (buf); |
1998 | INTERVAL i; | |
318d2fa8 | 1999 | Lisp_Object hooks; |
0c94c8d6 | 2000 | Lisp_Object prev_mod_hooks; |
318d2fa8 RS |
2001 | Lisp_Object mod_hooks; |
2002 | struct gcpro gcpro1; | |
2003 | ||
2004 | hooks = Qnil; | |
2005 | prev_mod_hooks = Qnil; | |
2006 | mod_hooks = Qnil; | |
2007 | ||
2008 | interval_insert_behind_hooks = Qnil; | |
2009 | interval_insert_in_front_hooks = Qnil; | |
2010 | ||
77c7bcb1 | 2011 | if (!intervals) |
318d2fa8 RS |
2012 | return; |
2013 | ||
2014 | if (start > end) | |
2015 | { | |
d311d28c | 2016 | ptrdiff_t temp = start; |
318d2fa8 RS |
2017 | start = end; |
2018 | end = temp; | |
2019 | } | |
2020 | ||
2021 | /* For an insert operation, check the two chars around the position. */ | |
2022 | if (start == end) | |
2023 | { | |
7cb66899 | 2024 | INTERVAL prev = NULL; |
318d2fa8 RS |
2025 | Lisp_Object before, after; |
2026 | ||
2027 | /* Set I to the interval containing the char after START, | |
2028 | and PREV to the interval containing the char before START. | |
2029 | Either one may be null. They may be equal. */ | |
2030 | i = find_interval (intervals, start); | |
2031 | ||
2032 | if (start == BUF_BEGV (buf)) | |
2033 | prev = 0; | |
2034 | else if (i->position == start) | |
2035 | prev = previous_interval (i); | |
2036 | else if (i->position < start) | |
2037 | prev = i; | |
2038 | if (start == BUF_ZV (buf)) | |
2039 | i = 0; | |
2040 | ||
2041 | /* If Vinhibit_read_only is set and is not a list, we can | |
2042 | skip the read_only checks. */ | |
2043 | if (NILP (Vinhibit_read_only) || CONSP (Vinhibit_read_only)) | |
2044 | { | |
2045 | /* If I and PREV differ we need to check for the read-only | |
cdf3e5a2 | 2046 | property together with its stickiness. If either I or |
318d2fa8 RS |
2047 | PREV are 0, this check is all we need. |
2048 | We have to take special care, since read-only may be | |
2049 | indirectly defined via the category property. */ | |
2050 | if (i != prev) | |
2051 | { | |
77c7bcb1 | 2052 | if (i) |
318d2fa8 RS |
2053 | { |
2054 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2055 | |
318d2fa8 RS |
2056 | /* If interval I is read-only and read-only is |
2057 | front-sticky, inhibit insertion. | |
2058 | Check for read-only as well as category. */ | |
2059 | if (! NILP (after) | |
2060 | && NILP (Fmemq (after, Vinhibit_read_only))) | |
2061 | { | |
2062 | Lisp_Object tem; | |
2063 | ||
2064 | tem = textget (i->plist, Qfront_sticky); | |
2065 | if (TMEM (Qread_only, tem) | |
2066 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2067 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2068 | text_read_only (after); |
318d2fa8 RS |
2069 | } |
2070 | } | |
2071 | ||
77c7bcb1 | 2072 | if (prev) |
318d2fa8 RS |
2073 | { |
2074 | before = textget (prev->plist, Qread_only); | |
81f6e55f | 2075 | |
318d2fa8 RS |
2076 | /* If interval PREV is read-only and read-only isn't |
2077 | rear-nonsticky, inhibit insertion. | |
2078 | Check for read-only as well as category. */ | |
2079 | if (! NILP (before) | |
2080 | && NILP (Fmemq (before, Vinhibit_read_only))) | |
2081 | { | |
2082 | Lisp_Object tem; | |
2083 | ||
2084 | tem = textget (prev->plist, Qrear_nonsticky); | |
2085 | if (! TMEM (Qread_only, tem) | |
2086 | && (! NILP (Fplist_get (prev->plist,Qread_only)) | |
2087 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2088 | text_read_only (before); |
318d2fa8 RS |
2089 | } |
2090 | } | |
2091 | } | |
77c7bcb1 | 2092 | else if (i) |
318d2fa8 RS |
2093 | { |
2094 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2095 | |
318d2fa8 RS |
2096 | /* If interval I is read-only and read-only is |
2097 | front-sticky, inhibit insertion. | |
2098 | Check for read-only as well as category. */ | |
2099 | if (! NILP (after) && NILP (Fmemq (after, Vinhibit_read_only))) | |
2100 | { | |
2101 | Lisp_Object tem; | |
2102 | ||
2103 | tem = textget (i->plist, Qfront_sticky); | |
2104 | if (TMEM (Qread_only, tem) | |
2105 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2106 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2107 | text_read_only (after); |
318d2fa8 RS |
2108 | |
2109 | tem = textget (prev->plist, Qrear_nonsticky); | |
2110 | if (! TMEM (Qread_only, tem) | |
2111 | && (! NILP (Fplist_get (prev->plist, Qread_only)) | |
2112 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2113 | text_read_only (after); |
318d2fa8 RS |
2114 | } |
2115 | } | |
2116 | } | |
2117 | ||
2118 | /* Run both insert hooks (just once if they're the same). */ | |
77c7bcb1 | 2119 | if (prev) |
318d2fa8 RS |
2120 | interval_insert_behind_hooks |
2121 | = textget (prev->plist, Qinsert_behind_hooks); | |
77c7bcb1 | 2122 | if (i) |
318d2fa8 RS |
2123 | interval_insert_in_front_hooks |
2124 | = textget (i->plist, Qinsert_in_front_hooks); | |
2125 | } | |
0ba7995b | 2126 | else |
318d2fa8 RS |
2127 | { |
2128 | /* Loop over intervals on or next to START...END, | |
2129 | collecting their hooks. */ | |
2130 | ||
2131 | i = find_interval (intervals, start); | |
2132 | do | |
2133 | { | |
2134 | if (! INTERVAL_WRITABLE_P (i)) | |
bcf97349 | 2135 | text_read_only (textget (i->plist, Qread_only)); |
318d2fa8 | 2136 | |
0ba7995b | 2137 | if (!inhibit_modification_hooks) |
318d2fa8 | 2138 | { |
0ba7995b GM |
2139 | mod_hooks = textget (i->plist, Qmodification_hooks); |
2140 | if (! NILP (mod_hooks) && ! EQ (mod_hooks, prev_mod_hooks)) | |
2141 | { | |
2142 | hooks = Fcons (mod_hooks, hooks); | |
2143 | prev_mod_hooks = mod_hooks; | |
2144 | } | |
318d2fa8 RS |
2145 | } |
2146 | ||
2147 | i = next_interval (i); | |
2148 | } | |
2149 | /* Keep going thru the interval containing the char before END. */ | |
77c7bcb1 | 2150 | while (i && i->position < end); |
318d2fa8 | 2151 | |
0ba7995b | 2152 | if (!inhibit_modification_hooks) |
318d2fa8 | 2153 | { |
0ba7995b GM |
2154 | GCPRO1 (hooks); |
2155 | hooks = Fnreverse (hooks); | |
2156 | while (! EQ (hooks, Qnil)) | |
2157 | { | |
2158 | call_mod_hooks (Fcar (hooks), make_number (start), | |
2159 | make_number (end)); | |
2160 | hooks = Fcdr (hooks); | |
2161 | } | |
2162 | UNGCPRO; | |
318d2fa8 | 2163 | } |
318d2fa8 RS |
2164 | } |
2165 | } | |
2166 | ||
96f90544 | 2167 | /* Run the interval hooks for an insertion on character range START ... END. |
318d2fa8 RS |
2168 | verify_interval_modification chose which hooks to run; |
2169 | this function is called after the insertion happens | |
2170 | so it can indicate the range of inserted text. */ | |
2171 | ||
2172 | void | |
971de7fb | 2173 | report_interval_modification (Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
2174 | { |
2175 | if (! NILP (interval_insert_behind_hooks)) | |
2e34157c | 2176 | call_mod_hooks (interval_insert_behind_hooks, start, end); |
318d2fa8 RS |
2177 | if (! NILP (interval_insert_in_front_hooks) |
2178 | && ! EQ (interval_insert_in_front_hooks, | |
2179 | interval_insert_behind_hooks)) | |
2e34157c | 2180 | call_mod_hooks (interval_insert_in_front_hooks, start, end); |
318d2fa8 RS |
2181 | } |
2182 | \f | |
d418ef42 | 2183 | void |
971de7fb | 2184 | syms_of_textprop (void) |
d418ef42 | 2185 | { |
29208e82 | 2186 | DEFVAR_LISP ("default-text-properties", Vdefault_text_properties, |
8c1a1077 PJ |
2187 | doc: /* Property-list used as default values. |
2188 | The value of a property in this list is seen as the value for every | |
2189 | character that does not have its own value for that property. */); | |
ad1b2f20 | 2190 | Vdefault_text_properties = Qnil; |
c7dd82a3 | 2191 | |
29208e82 | 2192 | DEFVAR_LISP ("char-property-alias-alist", Vchar_property_alias_alist, |
49d110a8 CW |
2193 | doc: /* Alist of alternative properties for properties without a value. |
2194 | Each element should look like (PROPERTY ALTERNATIVE1 ALTERNATIVE2...). | |
2195 | If a piece of text has no direct value for a particular property, then | |
2196 | this alist is consulted. If that property appears in the alist, then | |
2197 | the first non-nil value from the associated alternative properties is | |
2198 | returned. */); | |
2199 | Vchar_property_alias_alist = Qnil; | |
2200 | ||
29208e82 | 2201 | DEFVAR_LISP ("inhibit-point-motion-hooks", Vinhibit_point_motion_hooks, |
8c1a1077 PJ |
2202 | doc: /* If non-nil, don't run `point-left' and `point-entered' text properties. |
2203 | This also inhibits the use of the `intangible' text property. */); | |
688a5a0f | 2204 | Vinhibit_point_motion_hooks = Qnil; |
318d2fa8 | 2205 | |
abc2f676 | 2206 | DEFVAR_LISP ("text-property-default-nonsticky", |
29208e82 | 2207 | Vtext_property_default_nonsticky, |
22bcf204 | 2208 | doc: /* Alist of properties vs the corresponding non-stickiness. |
8c1a1077 PJ |
2209 | Each element has the form (PROPERTY . NONSTICKINESS). |
2210 | ||
2211 | If a character in a buffer has PROPERTY, new text inserted adjacent to | |
2212 | the character doesn't inherit PROPERTY if NONSTICKINESS is non-nil, | |
518c0b83 JB |
2213 | inherits it if NONSTICKINESS is nil. The `front-sticky' and |
2214 | `rear-nonsticky' properties of the character override NONSTICKINESS. */); | |
cabf1cac SM |
2215 | /* Text properties `syntax-table'and `display' should be nonsticky |
2216 | by default. */ | |
98ebf860 | 2217 | Vtext_property_default_nonsticky |
cabf1cac SM |
2218 | = Fcons (Fcons (intern_c_string ("syntax-table"), Qt), |
2219 | Fcons (Fcons (intern_c_string ("display"), Qt), Qnil)); | |
abc2f676 | 2220 | |
318d2fa8 RS |
2221 | staticpro (&interval_insert_behind_hooks); |
2222 | staticpro (&interval_insert_in_front_hooks); | |
2223 | interval_insert_behind_hooks = Qnil; | |
2224 | interval_insert_in_front_hooks = Qnil; | |
2225 | ||
81f6e55f | 2226 | |
d418ef42 JA |
2227 | /* Common attributes one might give text */ |
2228 | ||
cd3520a4 JB |
2229 | DEFSYM (Qforeground, "foreground"); |
2230 | DEFSYM (Qbackground, "background"); | |
2231 | DEFSYM (Qfont, "font"); | |
2232 | DEFSYM (Qstipple, "stipple"); | |
2233 | DEFSYM (Qunderline, "underline"); | |
2234 | DEFSYM (Qread_only, "read-only"); | |
2235 | DEFSYM (Qinvisible, "invisible"); | |
2236 | DEFSYM (Qintangible, "intangible"); | |
2237 | DEFSYM (Qcategory, "category"); | |
2238 | DEFSYM (Qlocal_map, "local-map"); | |
2239 | DEFSYM (Qfront_sticky, "front-sticky"); | |
2240 | DEFSYM (Qrear_nonsticky, "rear-nonsticky"); | |
2241 | DEFSYM (Qmouse_face, "mouse-face"); | |
2242 | DEFSYM (Qminibuffer_prompt, "minibuffer-prompt"); | |
d418ef42 JA |
2243 | |
2244 | /* Properties that text might use to specify certain actions */ | |
2245 | ||
cd3520a4 JB |
2246 | DEFSYM (Qmouse_left, "mouse-left"); |
2247 | DEFSYM (Qmouse_entered, "mouse-entered"); | |
2248 | DEFSYM (Qpoint_left, "point-left"); | |
2249 | DEFSYM (Qpoint_entered, "point-entered"); | |
d418ef42 JA |
2250 | |
2251 | defsubr (&Stext_properties_at); | |
5fbe2a44 | 2252 | defsubr (&Sget_text_property); |
eb769fd7 | 2253 | defsubr (&Sget_char_property); |
97a1bc63 | 2254 | defsubr (&Sget_char_property_and_overlay); |
fcab51aa RS |
2255 | defsubr (&Snext_char_property_change); |
2256 | defsubr (&Sprevious_char_property_change); | |
b7e047fb MB |
2257 | defsubr (&Snext_single_char_property_change); |
2258 | defsubr (&Sprevious_single_char_property_change); | |
d418ef42 | 2259 | defsubr (&Snext_property_change); |
9c79dd1b | 2260 | defsubr (&Snext_single_property_change); |
d418ef42 | 2261 | defsubr (&Sprevious_property_change); |
9c79dd1b | 2262 | defsubr (&Sprevious_single_property_change); |
d418ef42 | 2263 | defsubr (&Sadd_text_properties); |
d4b530ad | 2264 | defsubr (&Sput_text_property); |
d418ef42 JA |
2265 | defsubr (&Sset_text_properties); |
2266 | defsubr (&Sremove_text_properties); | |
11713b6d | 2267 | defsubr (&Sremove_list_of_text_properties); |
ad9c1940 JB |
2268 | defsubr (&Stext_property_any); |
2269 | defsubr (&Stext_property_not_all); | |
d418ef42 | 2270 | } |